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numerical solution of a system of ODE which is not in standard form

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Hi
I' m wondering can MATLAB solve a system of ODE of these forms numerically?
H11*dydt+H12*dxdt=H13
H21*dydt+H22*dxdt=H23
I can change it to standard form but I have very large numbers which MATLAB has problem with it and I receive this massage:
Output truncated. Text exceeds maximum line length for Command Window display.
. I will upload my output. I want to solve these ODE numerically so I need the coefficient of all of terms in each eqaution. I utilized the collect cammand but it did not work. How cam I control and arrenge these large coeffisient. how can i determine each coeffisient correctly?
I would be gratefull if some one can help me.
thank you in advance
raha
this is some terms of output differential equation
(930441627500546658162730981425505183132667665707339718275447859267760748743794621
3848815439656366790278984387099311194969091496593187779728810864687259359515581251
8191929791546041229963635314657368394923219128924360408416905997843608302300038558
79197879071442125658901144......................................................0
0000000000000000000*Iass^8*IBss^5*Ipss^4 - 191746860148563438549216527115219808387369783
2286756806355856960741923824185970189......

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Accepted Answer

Star Strider
Star Strider on 4 Jul 2020
It would likely help to have your code.
If you want more tractable numerical results, use the vpa function. The double function is also an option, however the arguments to it must not include any symbolic variables.

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Star Strider
Star Strider on 5 Jul 2020
I find your code difficult to follow, so in part I will defer to John’s analysis.
I still do not understand what you are doing, however the magnitudes of your constants are significantly greater than MATLAB’ floating-point limits, defined as realmax (1.797693134862316e+308), so I doubt if you could solve this numerically and get meaningful results, regardless.
I added these lines at the end of your posted code:
ddd = simplify(ddd, 'Steps',1000);
ddd = vpa(ddd, 5)
ddd_fcn = matlabFunction(ddd)
producing a long but tractable vpa result:
ddd =
-(2.0313e+127*(1.0485e+34*Iass - 6.8648e+32)*(1.4e+32*IBss - 1.0907e+31)*(1.8017e+565*IBss^6*Iass^5*Ipss^4 - 3.713e+564*IBss^6*Iass^5*Ipss^3 + 2.7034e+563*IBss^6*Iass^5*Ipss^2 - 7.9594e+561*IBss^6*Iass^5*Ipss + 7.3457e+559*IBss^6*Iass^5 + 3.6843e+597*IBss^6*Iass^4*Ipss^4 - 2.1412e+596*IBss^6*Iass^4*Ipss^3 - 4.8022e+595*IBss^6*Iass^4*Ipss^2 + 4.8364e+594*IBss^6*Iass^4*Ipss - 1.1825e+593*IBss^6*Iass^4 - 9.1201e+596*IBss^6*Iass^3*Ipss^4 + 5.2034e+595*IBss^6*Iass^3*Ipss^3 + 1.1894e+595*IBss^6*Iass^3*Ipss^2 - 1.1841e+594*IBss^6*Iass^3*Ipss + 2.8658e+592*IBss^6*Iass^3 + 8.4375e+595*IBss^6*Iass^2*Ipss^4 - 4.7133e+594*IBss^6*Iass^2*Ipss^3 - 1.101e+594*IBss^6*Iass^2*Ipss^2 + 1.0819e+593*IBss^6*Iass^2*Ipss - 2.5875e+591*IBss^6*Iass^2 - 3.4562e+594*IBss^6*Iass*Ipss^4 + 1.884e+593*IBss^6*Iass*Ipss^3 + 4.5132e+592*IBss^6*Iass*Ipss^2 - 4.369e+591*IBss^6*Iass*Ipss + 1.0304e+590*IBss^6*Iass + 5.2862e+592*IBss^6*Ipss^4 - 2.8e+591*IBss^6*Ipss^3 - 6.9085e+590*IBss^6*Ipss^2 + 6.5727e+589*IBss^6*Ipss - 1.5244e+588*IBss^6 + 3.2995e+565*IBss^5*Iass^6*Ipss^4 - 6.7997e+564*IBss^5*Iass^6*Ipss^3 + 4.9508e+563*IBss^5*Iass^6*Ipss^2 - 1.4576e+562*IBss^5*Iass^6*Ipss + 1.3452e+560*IBss^5*Iass^6 + 3.6034e+565*IBss^5*Iass^5*Ipss^5 + 7.3686e+597*IBss^5*Iass^5*Ipss^4 - 4.2824e+596*IBss^5*Iass^5*Ipss^3 - 9.6045e+595*IBss^5*Iass^5*Ipss^2 + 9.6728e+594*IBss^5*Iass^5*Ipss - 2.365e+593*IBss^5*Iass^5 + 1.4815e+597*IBss^5*Iass^4*Ipss^5 + 1.9238e+600*IBss^5*Iass^4*Ipss^4 - 1.4547e+599*IBss^5*Iass^4*Ipss^3 - 2.5453e+598*IBss^5*Iass^4*Ipss^2 + 2.9382e+597*IBss^5*Iass^4*Ipss - 7.7342e+595*IBss^5*Iass^4 - 3.6673e+596*IBss^5*Iass^3*Ipss^5 - 5.0391e+599*IBss^5*Iass^3*Ipss^4 + 3.7113e+598*IBss^5*Iass^3*Ipss^3 + 6.6741e+597*IBss^5*Iass^3*Ipss^2 - 7.5633e+596*IBss^5*Iass^3*Ipss + 1.9633e+595*IBss^5*Iass^3 + 3.3928e+595*IBss^5*Iass^2*Ipss^5 + 4.9085e+598*IBss^5*Iass^2*Ipss^4 - 3.5168e+597*IBss^5*Iass^2*Ipss^3 - 6.5091e+596*IBss^5*Iass^2*Ipss^2 + 7.2344e+595*IBss^5*Iass^2*Ipss - 1.8492e+594*IBss^5*Iass^2 - 1.3898e+594*IBss^5*Iass*Ipss^5 - 2.1074e+597*IBss^5*Iass*Ipss^4 + 1.4659e+596*IBss^5*Iass*Ipss^3 + 2.7989e+595*IBss^5*Iass*Ipss^2 - 3.0462e+594*IBss^5*Iass*Ipss + 7.6508e+592*IBss^5*Iass + 2.1256e+592*IBss^5*Ipss^5 + 3.3638e+595*IBss^5*Ipss^4 - 2.2645e+594*IBss^5*Ipss^3 - 4.4757e+593*IBss^5*Ipss^2 + 4.7595e+592*IBss^5*Ipss - 1.1712e+591*IBss^5 + 1.4978e+565*IBss^4*Iass^7*Ipss^4 - 3.0867e+564*IBss^4*Iass^7*Ipss^3 + 2.2474e+563*IBss^4*Iass^7*Ipss^2 - 6.6168e+561*IBss^4*Iass^7*Ipss + 6.1066e+559*IBss^4*Iass^7 + 3.2995e+565*IBss^4*Iass^6*Ipss^5 + 3.6843e+597*IBss^4*Iass^6*Ipss^4 - 2.1412e+596*IBss^4*Iass^6*Ipss^3 - 4.8022e+595*IBss^4*Iass^6*Ipss^2 + 4.8364e+594*IBss^4*Iass^6*Ipss - 1.1825e+593*IBss^4*Iass^6 + 1.8017e+565*IBss^4*Iass^5*Ipss^6 + 1.4815e+597*IBss^4*Iass^5*Ipss^5 + 1.923e+600*IBss^4*Iass^5*Ipss^4 - 1.453e+599*IBss^4*Iass^5*Ipss^3 - 2.5466e+598*IBss^4*Iass^5*Ipss^2 + 2.9387e+597*IBss^4*Iass^5*Ipss - 7.7348e+595*IBss^4*Iass^5 - 2.2028e+597*IBss^4*Iass^4*Ipss^6 - 1.1526e+600*IBss^4*Iass^4*Ipss^5 - 1.0992e+600*IBss^4*Iass^4*Ipss^4 + 1.6892e+599*IBss^4*Iass^4*Ipss^3 + 3.4654e+596*IBss^4*Iass^4*Ipss^2 - 8.2247e+596*IBss^4*Iass^4*Ipss + 2.6311e+595*IBss^4*Iass^4 + 5.4528e+596*IBss^4*Iass^3*Ipss^6 + 3.0168e+599*IBss^4*Iass^3*Ipss^5 + 2.1096e+599*IBss^4*Iass^3*Ipss^4 - 3.8071e+598*IBss^4*Iass^3*Ipss^3 + 8.9002e+596*IBss^4*Iass^3*Ipss^2 + 9.797e+595*IBss^4*Iass^3*Ipss - 3.7412e+594*IBss^4*Iass^3 - 5.0447e+595*IBss^4*Iass^2*Ipss^6 - 2.9378e+598*IBss^4*Iass^2*Ipss^5 - 1.8457e+598*IBss^4*Iass^2*Ipss^4 + 3.5122e+597*IBss^4*Iass^2*Ipss^3 - 1.1063e+596*IBss^4*Iass^2*Ipss^2 - 6.3108e+594*IBss^4*Iass^2*Ipss + 2.7242e+593*IBss^4*Iass^2 + 2.0664e+594*IBss^4*Iass*Ipss^6 + 1.2612e+597*IBss^4*Iass*Ipss^5 + 7.6012e+596*IBss^4*Iass*Ipss^4 - 1.465e+596*IBss^4*Iass*Ipss^3 + 5.0078e+594*IBss^4*Iass*Ipss^2 + 2.1785e+593*IBss^4*Iass*Ipss - 9.9377e+591*IBss^4*Iass - 3.1606e+592*IBss^4*Ipss^6 - 2.013e+595*IBss^4*Ipss^5 - 1.1968e+595*IBss^4*Ipss^4 + 2.292e+594*IBss^4*Ipss^3 - 7.9158e+592*IBss^4*Ipss^2 - 3.1297e+591*IBss^4*Ipss + 1.4245e+590*IBss^4 - 4.3976e+564*IBss^3*Iass^7*Ipss^4 + 9.0127e+563*IBss^3*Iass^7*Ipss^3 - 6.521e+562*IBss^3*Iass^7*Ipss^2 + 1.9072e+561*IBss^3*Iass^7*Ipss - 1.7529e+559*IBss^3*Iass^7 - 9.6875e+564*IBss^3*Iass^6*Ipss^5 - 1.6977e+597*IBss^3*Iass^6*Ipss^4 + 2.2314e+596*IBss^3*Iass^6*Ipss^3 - 1.7171e+594*IBss^3*Iass^6*Ipss^2 - 7.1691e+593*IBss^3*Iass^6*Ipss + 2.282e+592*IBss^3*Iass^6 - 5.2899e+564*IBss^3*Iass^5*Ipss^6 - 6.8266e+596*IBss^3*Iass^5*Ipss^5 - 8.9071e+599*IBss^3*Iass^5*Ipss^4 + 1.3231e+599*IBss^3*Iass^5*Ipss^3 - 1.812e+597*IBss^3*Iass^5*Ipss^2 - 4.3063e+596*IBss^3*Iass^5*Ipss + 1.5054e+595*IBss^3*Iass^5 + 1.015e+597*IBss^3*Iass^4*Ipss^6 + 5.3302e+599*IBss^3*Iass^4*Ipss^5 + 1.9783e+599*IBss^3*Iass^4*Ipss^4 - 4.3147e+598*IBss^3*Iass^4*Ipss^3 + 1.5303e+597*IBss^3*Iass^4*Ipss^2 + 7.2037e+595*IBss^3*Iass^4*Ipss - 3.3966e+594*IBss^3*Iass^4 - 2.5059e+596*IBss^3*Iass^3*Ipss^6 - 1.3913e+599*IBss^3*Iass^3*Ipss^5 - 1.6394e+598*IBss^3*Iass^3*Ipss^4 + 5.9998e+597*IBss^3*Iass^3*Ipss^3 - 3.2204e+596*IBss^3*Iass^3*Ipss^2 - 2.1576e+594*IBss^3*Iass^3*Ipss + 2.9989e+593*IBss^3*Iass^3 + 2.3114e+595*IBss^3*Iass^2*Ipss^6 + 1.3507e+598*IBss^3*Iass^2*Ipss^5 + 6.4777e+596*IBss^3*Iass^2*Ipss^4 - 4.3794e+596*IBss^3*Iass^2*Ipss^3 + 2.8648e+595*IBss^3*Iass^2*Ipss^2 - 2.1318e+593*IBss^3*Iass^2*Ipss - 1.3588e+592*IBss^3*Iass^2 - 9.4357e+593*IBss^3*Iass*Ipss^6 - 5.7777e+596*IBss^3*Iass*Ipss^5 - 1.3643e+595*IBss^3*Iass*Ipss^4 + 1.6382e+595*IBss^3*Iass*Ipss^3 - 1.1602e+594*IBss^3*Iass*Ipss^2 + 1.468e+592*IBss^3*Iass*Ipss + 3.4077e+590*IBss^3*Iass + 1.4375e+592*IBss^3*Ipss^6 + 9.1832e+594*IBss^3*Ipss^5 + 1.5417e+593*IBss^3*Ipss^4 - 2.455e+593*IBss^3*Ipss^3 + 1.7602e+592*IBss^3*Ipss^2 - 2.4732e+590*IBss^3*Ipss - 3.9273e+588*IBss^3 + 4.8236e+563*IBss^2*Iass^7*Ipss^4 - 9.8239e+562*IBss^2*Iass^7*Ipss^3 + 7.0565e+561*IBss^2*Iass^7*Ipss^2 - 2.0479e+560*IBss^2*Iass^7*Ipss + 1.873e+558*IBss^2*Iass^7 + 1.0626e+564*IBss^2*Iass^6*Ipss^5 + 2.4934e+596*IBss^2*Iass^6*Ipss^4 - 4.0675e+595*IBss^2*Iass^6*Ipss^3 + 1.7677e+594*IBss^2*Iass^6*Ipss^2 + 9.0941e+591*IBss^2*Iass^6*Ipss - 1.3333e+591*IBss^2*Iass^6 + 5.8024e+563*IBss^2*Iass^5*Ipss^6 + 1.0026e+596*IBss^2*Iass^5*Ipss^5 + 1.3174e+599*IBss^2*Iass^5*Ipss^4 - 2.3746e+598*IBss^2*Iass^5*Ipss^3 + 1.1432e+597*IBss^2*Iass^5*Ipss^2 + 3.7586e+594*IBss^2*Iass^5*Ipss - 8.8645e+593*IBss^2*Iass^5 - 1.4908e+596*IBss^2*Iass^4*Ipss^6 - 7.8801e+598*IBss^2*Iass^4*Ipss^5 - 1.7197e+598*IBss^2*Iass^4*Ipss^4 + 4.9782e+597*IBss^2*Iass^4*Ipss^3 - 2.8263e+596*IBss^2*Iass^4*Ipss^2 + 6.8425e+593*IBss^2*Iass^4*Ipss + 1.7569e+593*IBss^2*Iass^4 + 3.6632e+595*IBss^2*Iass^3*Ipss^6 + 2.0471e+598*IBss^2*Iass^3*Ipss^5 - 6.7652e+596*IBss^2*Iass^3*Ipss^4 - 3.6825e+596*IBss^2*Iass^3*Ipss^3 + 2.8874e+595*IBss^2*Iass^3*Ipss^2 - 3.0544e+593*IBss^2*Iass^3*Ipss - 1.2063e+592*IBss^2*Iass^3 - 3.3609e+594*IBss^2*Iass^2*Ipss^6 - 1.9765e+597*IBss^2*Iass^2*Ipss^5 + 2.0049e+596*IBss^2*Iass^2*Ipss^4 + 1.1162e+595*IBss^2*Iass^2*Ipss^3 - 1.597e+594*IBss^2*Iass^2*Ipss^2 + 3.123e+592*IBss^2*Iass^2*Ipss + 3.2599e+590*IBss^2*Iass^2 + 1.3637e+593*IBss^2*Iass*Ipss^6 + 8.4009e+595*IBss^2*Iass*Ipss^5 - 1.0446e+595*IBss^2*Iass*Ipss^4 - 1.1557e+593*IBss^2*Iass*Ipss^3 + 4.92e+592*IBss^2*Iass*Ipss^2 - 1.2796e+591*IBss^2*Iass*Ipss - 2.5064e+588*IBss^2*Iass - 2.063e+591*IBss^2*Ipss^6 - 1.3252e+594*IBss^2*Ipss^5 + 1.7188e+593*IBss^2*Ipss^4 + 1.6792e+590*IBss^2*Ipss^3 - 6.6153e+590*IBss^2*Ipss^2 + 1.8539e+589*IBss^2*Ipss - 9.4607e+585*IBss^2 - 2.3415e+562*IBss*Iass^7*Ipss^4 + 4.7344e+561*IBss*Iass^7*Ipss^3 - 3.3722e+560*IBss*Iass^7*Ipss^2 + 9.6969e+558*IBss*Iass^7*Ipss - 8.8166e+556*IBss*Iass^7 - 5.158e+562*IBss*Iass^6*Ipss^5 - 1.4907e+595*IBss*Iass^6*Ipss^4 + 2.6797e+594*IBss*Iass^6*Ipss^3 - 1.5334e+593*IBss*Iass^6*Ipss^2 + 2.4892e+591*IBss*Iass^6*Ipss + 1.5882e+589*IBss*Iass^6 - 2.8166e+562*IBss*Iass^5*Ipss^6 - 5.9941e+594*IBss*Iass^5*Ipss^5 - 7.9326e+597*IBss*Iass^5*Ipss^4 + 1.5618e+597*IBss*Iass^5*Ipss^3 - 9.6562e+595*IBss*Iass^5*Ipss^2 + 1.6773e+594*IBss*Iass^5*Ipss + 1.0672e+592*IBss*Iass^5 + 8.9125e+594*IBss*Iass^4*Ipss^6 + 4.7445e+597*IBss*Iass^4*Ipss^5 + 7.7321e+596*IBss*Iass^4*Ipss^4 - 2.7382e+596*IBss*Iass^4*Ipss^3 + 1.9209e+595*IBss*Iass^4*Ipss^2 - 3.5488e+593*IBss*Iass^4*Ipss - 1.9443e+591*IBss*Iass^4 - 2.1762e+594*IBss*Iass^3*Ipss^6 - 1.2248e+597*IBss*Iass^3*Ipss^5 + 1.0527e+596*IBss*Iass^3*Ipss^4 + 1.0974e+595*IBss*Iass^3*Ipss^3 - 1.2873e+594*IBss*Iass^3*Ipss^2 + 2.8092e+592*IBss*Iass^3*Ipss + 1.134e+590*IBss*Iass^3 + 1.9822e+593*IBss*Iass^2*Ipss^6 + 1.1738e+596*IBss*Iass^2*Ipss^5 - 1.7939e+595*IBss*Iass^2*Ipss^4 + 4.7853e+593*IBss*Iass^2*Ipss^3 + 2.9742e+592*IBss*Iass^2*Ipss^2 - 1.0697e+591*IBss*Iass^2*Ipss - 1.871e+588*IBss*Iass^2 - 7.9756e+591*IBss*Iass*Ipss^6 - 4.9455e+594*IBss*Iass*Ipss^5 + 8.6232e+593*IBss*Iass*Ipss^4 - 4.1144e+592*IBss*Iass*Ipss^3 + 4.9156e+589*IBss*Iass*Ipss^2 + 2.1635e+589*IBss*Iass*Ipss - 2.4916e+586*IBss*Iass + 1.1947e+590*IBss*Ipss^6 + 7.7198e+592*IBss*Ipss^5 - 1.3768e+592*IBss*Ipss^4 + 7.1481e+590*IBss*Ipss^3 - 6.1926e+588*IBss*Ipss^2 - 2.1249e+587*IBss*Ipss + 7.1254e+584*IBss + 4.2413e+560*Iass^7*Ipss^4 - 8.5046e+559*Iass^7*Ipss^3 + 5.9975e+558*Iass^7*Ipss^2 - 1.7057e+557*Iass^7*Ipss + 1.5397e+555*Iass^7 + 9.3433e+560*Iass^6*Ipss^5 + 3.1501e+593*Iass^6*Ipss^4 - 5.9515e+592*Iass^6*Ipss^3 + 3.7981e+591*Iass^6*Ipss^2 - 8.8293e+589*Iass^6*Ipss + 4.2059e+587*Iass^6 + 5.1019e+560*Iass^5*Ipss^6 + 1.2667e+593*Iass^5*Ipss^5 + 1.6876e+596*Iass^5*Ipss^4 - 3.4765e+595*Iass^5*Ipss^3 + 2.3793e+594*Iass^5*Ipss^2 - 5.815e+592*Iass^5*Ipss + 2.8083e+590*Iass^5 - 1.8834e+593*Iass^4*Ipss^6 - 1.0093e+596*Iass^4*Ipss^5 - 1.4371e+595*Iass^4*Ipss^4 + 5.6961e+594*Iass^4*Ipss^3 - 4.4255e+593*Iass^4*Ipss^2 + 1.1211e+592*Iass^4*Ipss - 5.4565e+589*Iass^4 + 4.5613e+592*Iass^3*Ipss^6 + 2.5843e+595*Iass^3*Ipss^5 - 2.6844e+594*Iass^3*Ipss^4 - 1.5628e+593*Iass^3*Ipss^3 + 2.4895e+592*Iass^3*Ipss^2 - 7.3032e+590*Iass^3*Ipss + 3.6627e+588*Iass^3 - 4.1152e+591*Iass^2*Ipss^6 - 2.4528e+594*Iass^2*Ipss^5 + 4.1508e+593*Iass^2*Ipss^4 - 1.7687e+592*Iass^2*Ipss^3 - 1.7954e+590*Iass^2*Ipss^2 + 1.7233e+589*Iass^2*Ipss - 9.7854e+586*Iass^2 + 1.6372e+590*Iass*Ipss^6 + 1.0214e+593*Iass*Ipss^5 - 1.935e+592*Iass*Ipss^4 + 1.1566e+591*Iass*Ipss^3 - 2.0727e+589*Iass*Ipss^2 - 4.6589e+586*Iass*Ipss + 8.5934e+584*Iass - 2.4194e+588*Ipss^6 - 1.5716e+591*Ipss^5 + 3.02e+590*Ipss^4 - 1.8883e+589*Ipss^3 + 4.0881e+587*Ipss^2 - 1.9022e+585*Ipss))/(- 2.0096e+791*IBss^8*Iass^6*Ipss^4 + 3.7741e+790*IBss^8*Iass^6*Ipss^3 - 2.5129e+789*IBss^8*Iass^6*Ipss^2 + 6.8477e+787*IBss^8*Iass^6*Ipss - 6.0318e+785*IBss^8*Iass^6 + 1.7188e+825*IBss^8*Iass^5*Ipss^4 - 3.228e+824*IBss^8*Iass^5*Ipss^3 + 2.1493e+823*IBss^8*Iass^5*Ipss^2 - 5.8568e+821*IBss^8*Iass^5*Ipss + 5.159e+819*IBss^8*Iass^5 - 5.1334e+824*IBss^8*Iass^4*Ipss^4 + 9.5499e+823*IBss^8*Iass^4*Ipss^3 - 6.2947e+822*IBss^8*Iass^4*Ipss^2 + 1.699e+821*IBss^8*Iass^4*Ipss - 1.4873e+819*IBss^8*Iass^4 + 6.1112e+823*IBss^8*Iass^3*Ipss^4 - 1.1252e+823*IBss^8*Iass^3*Ipss^3 + 7.3354e+821*IBss^8*Iass^3*Ipss^2 - 1.9591e+820*IBss^8*Iass^3*Ipss + 1.7032e+818*IBss^8*Iass^3 - 3.6245e+822*IBss^8*Iass^2*Ipss^4 + 6.5992e+821*IBss^8*Iass^2*Ipss^3 - 4.2502e+820*IBss^8*Iass^2*Ipss^2 + 1.1221e+819*IBss^8*Iass^2*Ipss - 9.6811e+816*IBss^8*Iass^2 + 1.0708e+821*IBss^8*Iass*Ipss^4 - 1.926e+820*IBss^8*Iass*Ipss^3 + 1.224e+819*IBss^8*Iass*Ipss^2 - 3.191e+817*IBss^8*Iass*Ipss + 2.7301e+815*IBss^8*Iass - 1.2606e+819*IBss^8*Ipss^4 + 2.2373e+818*IBss^8*Ipss^3 - 1.4015e+817*IBss^8*Ipss^2 + 3.604e+815*IBss^8*Ipss - 3.0552e+813*IBss^8 - 6.0289e+791*IBss^7*Iass^7*Ipss^4 + 1.1322e+791*IBss^7*Iass^7*Ipss^3 - 7.5386e+789*IBss^7*Iass^7*Ipss^2 + 2.0543e+788*IBss^7*Iass^7*Ipss - 1.8095e+786*IBss^7*Iass^7 + 3.9344e+790*IBss^7*Iass^6*Ipss^5 + 5.1565e+825*IBss^7*Iass^6*Ipss^4 - 9.684e+824*IBss^7*Iass^6*Ipss^3 + 6.4478e+823*IBss^7*Iass^6*Ipss^2 - 1.7571e+822*IBss^7*Iass^6*Ipss + 1.5477e+820*IBss^7*Iass^6 - 3.3651e+824*IBss^7*Iass^5*Ipss^5 + 9.2289e+827*IBss^7*Iass^5*Ipss^4 - 1.895e+827*IBss^7*Iass^5*Ipss^3 + 1.3466e+826*IBss^7*Iass^5*Ipss^2 - 3.8452e+824*IBss^7*Iass^5*Ipss + 3.4784e+822*IBss^7*Iass^5 + 1.005e+824*IBss^7*Iass^4*Ipss^5 - 2.8907e+827*IBss^7*Iass^4*Ipss^4 + 5.8644e+826*IBss^7*Iass^4*Ipss^3 - 4.1165e+825*IBss^7*Iass^4*Ipss^2 + 1.1622e+824*IBss^7*Iass^4*Ipss - 1.044e+822*IBss^7*Iass^4 - 1.1965e+823*IBss^7*Iass^3*Ipss^5 + 3.5932e+826*IBss^7*Iass^3*Ipss^4 - 7.1989e+825*IBss^7*Iass^3*Ipss^3 + 4.9875e+824*IBss^7*Iass^3*Ipss^2 - 1.3911e+823*IBss^7*Iass^3*Ipss + 1.2401e+821*IBss^7*Iass^3 + 7.0961e+821*IBss^7*Iass^2*Ipss^5 - 2.2171e+825*IBss^7*Iass^2*Ipss^4 + 4.3837e+824*IBss^7*Iass^2*Ipss^3 - 2.9947e+823*IBss^7*Iass^2*Ipss^2 + 8.2437e+821*IBss^7*Iass^2*Ipss - 7.2878e+819*IBss^7*Iass^2 - 2.0965e+820*IBss^7*Iass*Ipss^5 + 6.7921e+823*IBss^7*Iass*Ipss^4 - 1.3243e+823*IBss^7*Iass*Ipss^3 + 8.9108e+821*IBss^7*Iass*Ipss^2 - 2.4183e+820*IBss^7*Iass*Ipss + 2.1184e+818*IBss^7*Iass + 2.468e+818*IBss^7*Ipss^5 - 8.2664e+821*IBss^7*Ipss^4 + 1.588e+821*IBss^7*Ipss^3 - 1.0512e+820*IBss^7*Ipss^2 + 2.8095e+818*IBss^7*Ipss - 2.4366e+816*IBss^7 - 6.0289e+791*IBss^6*Iass^8*Ipss^4 + 1.1322e+791*IBss^6*Iass^8*Ipss^3 - 7.5386e+789*IBss^6*Iass^8*Ipss^2 + 2.0543e+788*IBss^6*Iass^8*Ipss - 1.8095e+786*IBss^6*Iass^8 + 7.8688e+790*IBss^6*Iass^7*Ipss^5 + 5.1565e+825*IBss^6*Iass^7*Ipss^4 - 9.684e+824*IBss^6*Iass^7*Ipss^3 + 6.4478e+823*IBss^6*Iass^7*Ipss^2 - 1.7571e+822*IBss^6*Iass^7*Ipss + 1.5477e+820*IBss^6*Iass^7 + 1.6847e+791*IBss^6*Iass^6*Ipss^6 - 6.7302e+824*IBss^6*Iass^6*Ipss^5 + 1.8467e+828*IBss^6*Iass^6*Ipss^4 - 3.7917e+827*IBss^6*Iass^6*Ipss^3 + 2.6944e+826*IBss^6*Iass^6*Ipss^2 - 7.6935e+824*IBss^6*Iass^6*Ipss + 6.9595e+822*IBss^6*Iass^6 - 1.4409e+825*IBss^6*Iass^5*Ipss^6 - 1.0634e+828*IBss^6*Iass^5*Ipss^5 + 1.3089e+829*IBss^6*Iass^5*Ipss^4 - 2.9093e+828*IBss^6*Iass^5*Ipss^3 + 2.2688e+827*IBss^6*Iass^5*Ipss^2 - 7.0448e+825*IBss^6*Iass^5*Ipss + 6.6945e+823*IBss^6*Iass^5 + 4.3033e+824*IBss^6*Iass^4*Ipss^6 + 3.3278e+827*IBss^6*Iass^4*Ipss^5 - 4.3935e+828*IBss^6*Iass^4*Ipss^4 + 9.6818e+827*IBss^6*Iass^4*Ipss^3 - 7.4816e+826*IBss^6*Iass^4*Ipss^2 + 2.3032e+825*IBss^6*Iass^4*Ipss - 2.1777e+823*IBss^6*Iass^4 - 5.1231e+823*IBss^6*Iass^3*Ipss^6 - 4.1347e+826*IBss^6*Iass^3*Ipss^5 + 5.7642e+827*IBss^6*Iass^3*Ipss^4 - 1.2611e+827*IBss^6*Iass^3*Ipss^3 + 9.6689e+825*IBss^6*Iass^3*Ipss^2 - 2.9533e+824*IBss^6*Iass^3*Ipss + 2.7796e+822*IBss^6*Iass^3 + 3.0385e+822*IBss^6*Iass^2*Ipss^6 + 2.55e+825*IBss^6*Iass^2*Ipss^5 - 3.7465e+826*IBss^6*Iass^2*Ipss^4 + 8.1387e+825*IBss^6*Iass^2*Ipss^3 - 6.1906e+824*IBss^6*Iass^2*Ipss^2 + 1.8756e+823*IBss^6*Iass^2*Ipss - 1.7566e+821*IBss^6*Iass^2 - 8.9768e+820*IBss^6*Iass*Ipss^6 - 7.8071e+823*IBss^6*Iass*Ipss^5 + 1.2095e+825*IBss^6*Iass*Ipss^4 - 2.6082e+824*IBss^6*Iass*Ipss^3 + 1.9673e+823*IBss^6*Iass*Ipss^2 - 5.9076e+821*IBss^6*Iass*Ipss + 5.5029e+819*IBss^6*Iass + 1.0568e+819*IBss^6*Ipss^6 + 9.4945e+821*IBss^6*Ipss^5 - 1.5526e+823*IBss^6*Ipss^4 + 3.3221e+822*IBss^6*Ipss^3 - 2.4829e+821*IBss^6*Ipss^2 + 7.3823e+819*IBss^6*Ipss - 6.834e+817*IBss^6 - 2.0096e+791*IBss^5*Iass^9*Ipss^4 + 3.7741e+790*IBss^5*Iass^9*Ipss^3 - 2.5129e+789*IBss^5*Iass^9*Ipss^2 + 6.8477e+787*IBss^5*Iass^9*Ipss - 6.0318e+785*IBss^5*Iass^9 + 3.9344e+790*IBss^5*Iass^8*Ipss^5 + 1.7188e+825*IBss^5*Iass^8*Ipss^4 - 3.228e+824*IBss^5*Iass^8*Ipss^3 + 2.1493e+823*IBss^5*Iass^8*Ipss^2 - 5.8568e+821*IBss^5*Iass^8*Ipss + 5.159e+819*IBss^5*Iass^8 + 1.6847e+791*IBss^5*Iass^7*Ipss^6 - 3.3651e+824*IBss^5*Iass^7*Ipss^5 + 9.2272e+827*IBss^5*Iass^7*Ipss^4 - 1.8947e+827*IBss^5*Iass^7*Ipss^3 + 1.3464e+826*IBss^5*Iass^7*Ipss^2 - 3.8446e+824*IBss^5*Iass^7*Ipss + 3.4779e+822*IBss^5*Iass^7 - 7.1838e+790*IBss^5*Iass^6*Ipss^7 - 1.4409e+825*IBss^5*Iass^6*Ipss^6 - 1.0634e+828*IBss^5*Iass^6*Ipss^5 + 1.3055e+829*IBss^5*Iass^6*Ipss^4 - 2.9024e+828*IBss^5*Iass^6*Ipss^3 + 2.2639e+827*IBss^5*Iass^6*Ipss^2 - 7.0313e+825*IBss^5*Iass^6*Ipss + 6.6825e+823*IBss^5*Iass^6 + 6.1443e+824*IBss^5*Iass^5*Ipss^7 + 3.063e+827*IBss^5*Iass^5*Ipss^6 - 7.5885e+828*IBss^5*Iass^5*Ipss^5 - 6.1238e+828*IBss^5*Iass^5*Ipss^4 + 1.6085e+828*IBss^5*Iass^5*Ipss^3 - 1.307e+827*IBss^5*Iass^5*Ipss^2 + 4.1106e+825*IBss^5*Iass^5*Ipss - 3.9223e+823*IBss^5*Iass^5 - 1.835e+824*IBss^5*Iass^4*Ipss^7 - 9.5761e+826*IBss^5*Iass^4*Ipss^6 + 2.5508e+828*IBss^5*Iass^4*Ipss^5 + 1.194e+828*IBss^5*Iass^4*Ipss^4 - 3.4471e+827*IBss^5*Iass^4*Ipss^3 + 2.8476e+826*IBss^5*Iass^4*Ipss^2 - 8.9731e+824*IBss^5*Iass^4*Ipss + 8.5576e+822*IBss^5*Iass^4 + 2.1846e+823*IBss^5*Iass^3*Ipss^7 + 1.1891e+826*IBss^5*Iass^3*Ipss^6 - 3.3519e+827*IBss^5*Iass^3*Ipss^5 - 1.2382e+827*IBss^5*Iass^3*Ipss^4 + 3.7613e+826*IBss^5*Iass^3*Ipss^3 - 3.1212e+825*IBss^5*Iass^3*Ipss^2 + 9.802e+823*IBss^5*Iass^3*Ipss - 9.321e+821*IBss^5*Iass^3 - 1.2957e+822*IBss^5*Iass^2*Ipss^7 - 7.3294e+824*IBss^5*Iass^2*Ipss^6 + 2.1821e+826*IBss^5*Iass^2*Ipss^5 + 7.1678e+825*IBss^5*Iass^2*Ipss^4 - 2.2296e+825*IBss^5*Iass^2*Ipss^3 + 1.8459e+824*IBss^5*Iass^2*Ipss^2 - 5.7582e+822*IBss^5*Iass^2*Ipss + 5.4509e+820*IBss^5*Iass^2 + 3.8279e+820*IBss^5*Iass*Ipss^7 + 2.2424e+823*IBss^5*Iass*Ipss^6 - 7.0556e+824*IBss^5*Iass*Ipss^5 - 2.1881e+824*IBss^5*Iass*Ipss^4 + 6.8509e+823*IBss^5*Iass*Ipss^3 - 5.6343e+822*IBss^5*Iass*Ipss^2 + 1.7412e+821*IBss^5*Iass*Ipss - 1.6385e+819*IBss^5*Iass - 4.5064e+818*IBss^5*Ipss^7 - 2.7247e+821*IBss^5*Ipss^6 + 9.0711e+822*IBss^5*Ipss^5 + 2.745e+822*IBss^5*Ipss^4 - 8.5571e+821*IBss^5*Ipss^3 + 6.9678e+820*IBss^5*Ipss^2 - 2.1281e+819*IBss^5*Ipss + 1.9877e+817*IBss^5 + 6.9778e+790*IBss^4*Iass^9*Ipss^4 - 1.2948e+790*IBss^4*Iass^9*Ipss^3 + 8.5111e+788*IBss^4*Iass^9*Ipss^2 - 2.2911e+787*IBss^4*Iass^9*Ipss + 2.0021e+785*IBss^4*Iass^9 - 1.3661e+790*IBss^4*Iass^8*Ipss^5 - 5.9681e+824*IBss^4*Iass^8*Ipss^4 + 1.1074e+824*IBss^4*Iass^8*Ipss^3 - 7.2796e+822*IBss^4*Iass^8*Ipss^2 + 1.9596e+821*IBss^4*Iass^8*Ipss - 1.7124e+819*IBss^4*Iass^8 - 5.8495e+790*IBss^4*Iass^7*Ipss^6 + 1.1684e+824*IBss^4*Iass^7*Ipss^5 - 3.2305e+827*IBss^4*Iass^7*Ipss^4 + 6.5588e+826*IBss^4*Iass^7*Ipss^3 - 4.6002e+825*IBss^4*Iass^7*Ipss^2 + 1.2969e+824*IBss^4*Iass^7*Ipss - 1.1638e+822*IBss^4*Iass^7 + 2.4944e+790*IBss^4*Iass^6*Ipss^7 + 5.0031e+824*IBss^4*Iass^6*Ipss^6 + 3.7116e+827*IBss^4*Iass^6*Ipss^5 - 4.9724e+828*IBss^4*Iass^6*Ipss^4 + 1.098e+828*IBss^4*Iass^6*Ipss^3 - 8.4933e+826*IBss^4*Iass^6*Ipss^2 + 2.615e+825*IBss^4*Iass^6*Ipss - 2.4725e+823*IBss^4*Iass^6 - 2.1334e+824*IBss^4*Iass^5*Ipss^7 - 1.0656e+827*IBss^4*Iass^5*Ipss^6 + 2.8949e+828*IBss^4*Iass^5*Ipss^5 + 1.2366e+828*IBss^4*Iass^5*Ipss^4 - 3.6546e+827*IBss^4*Iass^5*Ipss^3 + 3.0356e+826*IBss^4*Iass^5*Ipss^2 - 9.585e+824*IBss^4*Iass^5*Ipss + 9.1484e+822*IBss^4*Iass^5 + 6.3343e+823*IBss^4*Iass^4*Ipss^7 + 3.3117e+826*IBss^4*Iass^4*Ipss^6 - 9.6699e+827*IBss^4*Iass^4*Ipss^5 - 9.8531e+826*IBss^4*Iass^4*Ipss^4 + 5.1858e+826*IBss^4*Iass^4*Ipss^3 - 4.6882e+825*IBss^4*Iass^4*Ipss^2 + 1.52e+824*IBss^4*Iass^4*Ipss - 1.4643e+822*IBss^4*Iass^4 - 7.493e+822*IBss^4*Iass^3*Ipss^7 - 4.0853e+825*IBss^4*Iass^3*Ipss^6 + 1.2643e+827*IBss^4*Iass^3*Ipss^5 + 1.0446e+825*IBss^4*Iass^3*Ipss^4 - 4.1203e+825*IBss^4*Iass^3*Ipss^3 + 4.0507e+824*IBss^4*Iass^3*Ipss^2 - 1.3417e+823*IBss^4*Iass^3*Ipss + 1.3011e+821*IBss^4*Iass^3 + 4.4134e+821*IBss^4*Iass^2*Ipss^7 + 2.4997e+824*IBss^4*Iass^2*Ipss^6 - 8.19e+825*IBss^4*Iass^2*Ipss^5 + 2.4064e+824*IBss^4*Iass^2*Ipss^4 + 1.9616e+824*IBss^4*Iass^2*Ipss^3 - 2.0593e+823*IBss^4*Iass^2*Ipss^2 + 6.9011e+821*IBss^4*Iass^2*Ipss - 6.7073e+819*IBss^4*Iass^2 - 1.2941e+820*IBss^4*Iass*Ipss^7 - 7.5865e+822*IBss^4*Iass*Ipss^6 + 2.6345e+824*IBss^4*Iass*Ipss^5 - 1.1867e+823*IBss^4*Iass*Ipss^4 - 5.3023e+822*IBss^4*Iass*Ipss^3 + 5.771e+821*IBss^4*Iass*Ipss^2 - 1.9347e+820*IBss^4*Iass*Ipss + 1.8754e+818*IBss^4*Iass + 1.5112e+818*IBss^4*Ipss^7 + 9.1372e+820*IBss^4*Ipss^6 - 3.3682e+822*IBss^4*Ipss^5 + 1.685e+821*IBss^4*Ipss^4 + 6.2595e+820*IBss^4*Ipss^3 - 6.8555e+819*IBss^4*Ipss^2 + 2.2749e+818*IBss^4*Ipss - 2.1886e+816*IBss^4 - 9.6373e+789*IBss^3*Iass^9*Ipss^4 + 1.7645e+789*IBss^3*Iass^9*Ipss^3 - 1.1432e+788*IBss^3*Iass^9*Ipss^2 + 3.0351e+786*IBss^3*Iass^9*Ipss - 2.6283e+784*IBss^3*Iass^9 + 1.8868e+789*IBss^3*Iass^8*Ipss^5 + 8.2428e+823*IBss^3*Iass^8*Ipss^4 - 1.5092e+823*IBss^3*Iass^8*Ipss^3 + 9.7778e+821*IBss^3*Iass^8*Ipss^2 - 2.5959e+820*IBss^3*Iass^8*Ipss + 2.248e+818*IBss^3*Iass^8 + 8.079e+789*IBss^3*Iass^7*Ipss^6 - 1.6138e+823*IBss^3*Iass^7*Ipss^5 + 4.4948e+826*IBss^3*Iass^7*Ipss^4 - 9.0124e+825*IBss^3*Iass^7*Ipss^3 + 6.2292e+824*IBss^3*Iass^7*Ipss^2 - 1.7311e+823*IBss^3*Iass^7*Ipss + 1.5392e+821*IBss^3*Iass^7 - 3.4451e+789*IBss^3*Iass^6*Ipss^7 - 6.91e+823*IBss^3*Iass^6*Ipss^6 - 5.1508e+826*IBss^3*Iass^6*Ipss^5 + 7.3958e+827*IBss^3*Iass^6*Ipss^4 - 1.6238e+827*IBss^3*Iass^6*Ipss^3 + 1.2468e+826*IBss^3*Iass^6*Ipss^2 - 3.8075e+824*IBss^3*Iass^6*Ipss + 3.5821e+822*IBss^3*Iass^6 + 2.9466e+823*IBss^3*Iass^5*Ipss^7 + 1.4746e+826*IBss^3*Iass^5*Ipss^6 - 4.3133e+827*IBss^3*Iass^5*Ipss^5 - 1.3742e+827*IBss^3*Iass^5*Ipss^4 + 4.3715e+826*IBss^3*Iass^5*Ipss^3 - 3.6632e+825*IBss^3*Iass^5*Ipss^2 + 1.1541e+824*IBss^3*Iass^5*Ipss - 1.0987e+822*IBss^3*Iass^5 - 8.6917e+822*IBss^3*Iass^4*Ipss^7 - 4.5526e+825*IBss^3*Iass^4*Ipss^6 + 1.4334e+827*IBss^3*Iass^4*Ipss^5 - 2.6055e+824*IBss^3*Iass^4*Ipss^4 - 4.3666e+825*IBss^3*Iass^4*Ipss^3 + 4.3657e+824*IBss^3*Iass^4*Ipss^2 - 1.4531e+823*IBss^3*Iass^4*Ipss + 1.4117e+821*IBss^3*Iass^4 + 1.0209e+822*IBss^3*Iass^3*Ipss^7 + 5.5748e+824*IBss^3*Iass^3*Ipss^6 - 1.8662e+826*IBss^3*Iass^3*Ipss^5 + 1.7496e+825*IBss^3*Iass^3*Ipss^4 + 1.8888e+824*IBss^3*Iass^3*Ipss^3 - 2.7664e+823*IBss^3*Iass^3*Ipss^2 + 1.0015e+822*IBss^3*Iass^3*Ipss - 1.0008e+820*IBss^3*Iass^3 - 5.9665e+820*IBss^3*Iass^2*Ipss^7 - 3.3831e+823*IBss^3*Iass^2*Ipss^6 + 1.2036e+825*IBss^3*Iass^2*Ipss^5 - 1.5681e+824*IBss^3*Iass^2*Ipss^4 - 2.3767e+822*IBss^3*Iass^2*Ipss^3 + 1.0244e+822*IBss^3*Iass^2*Ipss^2 - 4.1214e+820*IBss^3*Iass^2*Ipss + 4.2455e+818*IBss^3*Iass^2 + 1.7348e+819*IBss^3*Iass*Ipss^7 + 1.0175e+822*IBss^3*Iass*Ipss^6 - 3.8532e+823*IBss^3*Iass*Ipss^5 + 5.5876e+822*IBss^3*Iass*Ipss^4 - 5.4909e+820*IBss^3*Iass*Ipss^3 - 2.2278e+820*IBss^3*Iass*Ipss^2 + 9.8445e+818*IBss^3*Iass*Ipss - 1.0362e+817*IBss^3*Iass - 2.0072e+817*IBss^3*Ipss^7 - 1.2132e+820*IBss^3*Ipss^6 + 4.9004e+821*IBss^3*Ipss^5 - 7.3062e+820*IBss^3*Ipss^4 + 1.2552e+819*IBss^3*Ipss^3 + 2.3106e+818*IBss^3*Ipss^2 - 1.0627e+817*IBss^3*Ipss + 1.1229e+815*IBss^3 + 6.616e+788*IBss^2*Iass^9*Ipss^4 - 1.1933e+788*IBss^2*Iass^9*Ipss^3 + 7.6063e+786*IBss^2*Iass^9*Ipss^2 - 1.9881e+785*IBss^2*Iass^9*Ipss + 1.7038e+783*IBss^2*Iass^9 - 1.2953e+788*IBss^2*Iass^8*Ipss^5 - 5.6587e+822*IBss^2*Iass^8*Ipss^4 + 1.0206e+822*IBss^2*Iass^8*Ipss^3 - 6.5057e+820*IBss^2*Iass^8*Ipss^2 + 1.7004e+819*IBss^2*Iass^8*Ipss - 1.4573e+817*IBss^2*Iass^8 - 5.5463e+788*IBss^2*Iass^7*Ipss^6 + 1.1079e+822*IBss^2*Iass^7*Ipss^5 - 3.1074e+825*IBss^2*Iass^7*Ipss^4 + 6.1449e+824*IBss^2*Iass^7*Ipss^3 - 4.1779e+823*IBss^2*Iass^7*Ipss^2 + 1.1425e+822*IBss^2*Iass^7*Ipss - 1.0053e+820*IBss^2*Iass^7 + 2.365e+788*IBss^2*Iass^6*Ipss^7 + 4.7437e+822*IBss^2*Iass^6*Ipss^6 + 3.5515e+825*IBss^2*Iass^6*Ipss^5 - 5.4525e+826*IBss^2*Iass^6*Ipss^4 + 1.1899e+826*IBss^2*Iass^6*Ipss^3 - 9.064e+824*IBss^2*Iass^6*Ipss^2 + 2.7429e+823*IBss^2*Iass^6*Ipss - 2.5659e+821*IBss^2*Iass^6 - 2.0228e+822*IBss^2*Iass^5*Ipss^7 - 1.0138e+825*IBss^2*Iass^5*Ipss^6 + 3.1855e+826*IBss^2*Iass^5*Ipss^5 + 8.7515e+825*IBss^2*Iass^5*Ipss^4 - 2.8942e+825*IBss^2*Iass^5*Ipss^3 + 2.4251e+824*IBss^2*Iass^5*Ipss^2 - 7.5886e+822*IBss^2*Iass^5*Ipss + 7.1894e+820*IBss^2*Iass^5 + 5.9239e+821*IBss^2*Iass^4*Ipss^7 + 3.1069e+824*IBss^2*Iass^4*Ipss^6 - 1.0532e+826*IBss^2*Iass^4*Ipss^5 + 4.4882e+824*IBss^2*Iass^4*Ipss^4 + 2.234e+824*IBss^2*Iass^4*Ipss^3 - 2.4357e+823*IBss^2*Iass^4*Ipss^2 + 8.2399e+821*IBss^2*Iass^4*Ipss - 8.0339e+819*IBss^2*Iass^4 - 6.9028e+820*IBss^2*Iass^3*Ipss^7 - 3.7732e+823*IBss^2*Iass^3*Ipss^6 + 1.3651e+825*IBss^2*Iass^3*Ipss^5 - 1.8221e+824*IBss^2*Iass^3*Ipss^4 - 1.8207e+822*IBss^2*Iass^3*Ipss^3 + 1.0991e+822*IBss^2*Iass^3*Ipss^2 - 4.4905e+820*IBss^2*Iass^3*Ipss + 4.6456e+818*IBss^2*Iass^3 + 3.9994e+819*IBss^2*Iass^2*Ipss^7 + 2.2687e+822*IBss^2*Iass^2*Ipss^6 - 8.7632e+823*IBss^2*Iass^2*Ipss^5 + 1.4832e+823*IBss^2*Iass^2*Ipss^4 - 5.6996e+821*IBss^2*Iass^2*Ipss^3 - 1.8406e+820*IBss^2*Iass^2*Ipss^2 + 1.3129e+819*IBss^2*Iass^2*Ipss - 1.5187e+817*IBss^2*Iass^2 - 1.1518e+818*IBss^2*Iass*Ipss^7 - 6.7531e+820*IBss^2*Iass*Ipss^6 + 2.791e+822*IBss^2*Iass*Ipss^5 - 5.1164e+821*IBss^2*Iass*Ipss^4 + 2.6925e+820*IBss^2*Iass*Ipss^3 - 9.415e+817*IBss^2*Iass*Ipss^2 - 2.0887e+817*IBss^2*Iass*Ipss + 2.8607e+815*IBss^2*Iass + 1.3189e+816*IBss^2*Ipss^7 + 7.9611e+818*IBss^2*Ipss^6 - 3.5288e+820*IBss^2*Ipss^5 + 6.5901e+819*IBss^2*Ipss^4 - 3.7219e+818*IBss^2*Ipss^3 + 4.0358e+816*IBss^2*Ipss^2 + 1.6473e+815*IBss^2*Ipss - 2.6121e+813*IBss^2 - 2.257e+787*IBss*Iass^9*Ipss^4 + 4.0032e+786*IBss*Iass^9*Ipss^3 - 2.5053e+785*IBss*Iass^9*Ipss^2 + 6.4345e+783*IBss*Iass^9*Ipss - 5.4497e+781*IBss*Iass^9 + 4.4187e+786*IBss*Iass^8*Ipss^5 + 1.9304e+821*IBss*Iass^8*Ipss^4 - 3.4239e+820*IBss*Iass^8*Ipss^3 + 2.1428e+819*IBss*Iass^8*Ipss^2 - 5.5034e+817*IBss*Iass^8*Ipss + 4.6611e+815*IBss*Iass^8 + 1.892e+787*IBss*Iass^7*Ipss^6 - 3.7793e+820*IBss*Iass^7*Ipss^5 + 1.0673e+824*IBss*Iass^7*Ipss^4 - 2.0783e+823*IBss*Iass^7*Ipss^3 + 1.3872e+822*IBss*Iass^7*Ipss^2 - 3.7256e+820*IBss*Iass^7*Ipss + 3.2395e+818*IBss*Iass^7 - 8.0681e+786*IBss*Iass^6*Ipss^7 - 1.6183e+821*IBss*Iass^6*Ipss^6 - 1.2163e+824*IBss*Iass^6*Ipss^5 + 1.9976e+825*IBss*Iass^6*Ipss^4 - 4.3298e+824*IBss*Iass^6*Ipss^3 + 3.2684e+823*IBss*Iass^6*Ipss^2 - 9.7864e+821*IBss*Iass^6*Ipss + 9.0941e+819*IBss*Iass^6 + 6.9006e+820*IBss*Iass^5*Ipss^7 + 3.4612e+823*IBss*Iass^5*Ipss^6 - 1.169e+825*IBss*Iass^5*Ipss^5 - 2.992e+824*IBss*Iass^5*Ipss^4 + 1.0034e+824*IBss*Iass^5*Ipss^3 - 8.3541e+822*IBss*Iass^5*Ipss^2 + 2.5861e+821*IBss*Iass^5*Ipss - 2.4327e+819*IBss*Iass^5 - 2.0047e+820*IBss*Iass^4*Ipss^7 - 1.0521e+823*IBss*Iass^4*Ipss^6 + 3.8445e+824*IBss*Iass^4*Ipss^5 - 2.2644e+823*IBss*Iass^4*Ipss^4 - 6.654e+822*IBss*Iass^4*Ipss^3 + 7.6288e+821*IBss*Iass^4*Ipss^2 - 2.5849e+820*IBss*Iass^4*Ipss + 2.5132e+818*IBss*Iass^4 + 2.3155e+819*IBss*Iass^3*Ipss^7 + 1.266e+822*IBss*Iass^3*Ipss^6 - 4.9587e+823*IBss*Iass^3*Ipss^5 + 7.3814e+822*IBss*Iass^3*Ipss^4 - 1.0768e+821*IBss*Iass^3*Ipss^3 - 2.6055e+820*IBss*Iass^3*Ipss^2 + 1.1897e+819*IBss*Iass^3*Ipss - 1.2617e+817*IBss*Iass^3 - 1.3285e+818*IBss*Iass^2*Ipss^7 - 7.5334e+820*IBss*Iass^2*Ipss^6 + 3.1665e+822*IBss*Iass^2*Ipss^5 - 5.8259e+821*IBss*Iass^2*Ipss^4 + 3.0901e+820*IBss*Iass^2*Ipss^3 - 1.295e+818*IBss*Iass^2*Ipss^2 - 2.3031e+817*IBss*Iass^2*Ipss + 3.1828e+815*IBss*Iass^2 + 3.7854e+816*IBss*Iass*Ipss^7 + 2.2165e+819*IBss*Iass*Ipss^6 - 1.0025e+821*IBss*Iass*Ipss^5 + 1.9795e+820*IBss*Iass*Ipss^4 - 1.2736e+819*IBss*Iass*Ipss^3 + 2.6427e+817*IBss*Iass*Ipss^2 + 6.1427e+814*IBss*Iass*Ipss - 3.8786e+813*IBss*Iass - 4.2841e+814*IBss*Ipss^7 - 2.5796e+817*IBss*Ipss^6 + 1.259e+819*IBss*Ipss^5 - 2.5216e+818*IBss*Ipss^4 + 1.6908e+817*IBss*Ipss^3 - 4.1198e+815*IBss*Ipss^2 + 1.9691e+813*IBss*Ipss + 2.1283e+811*IBss + 3.0603e+785*Iass^9*Ipss^4 - 5.3278e+784*Iass^9*Ipss^3 + 3.2667e+783*Iass^9*Ipss^2 - 8.229e+781*Iass^9*Ipss + 6.878e+779*Iass^9 - 5.9915e+784*Iass^8*Ipss^5 - 2.6175e+819*Iass^8*Ipss^4 + 4.5569e+818*Iass^8*Ipss^3 - 2.794e+817*Iass^8*Ipss^2 + 7.0382e+815*Iass^8*Ipss - 5.8827e+813*Iass^8 - 2.5655e+785*Iass^7*Ipss^6 + 5.1245e+818*Iass^7*Ipss^5 - 1.4567e+822*Iass^7*Ipss^4 + 2.7888e+821*Iass^7*Ipss^3 - 1.8233e+820*Iass^7*Ipss^2 + 4.8007e+818*Iass^7*Ipss - 4.1194e+816*Iass^7 + 1.094e+785*Iass^6*Ipss^7 + 2.1943e+819*Iass^6*Ipss^6 + 1.6551e+822*Iass^6*Ipss^5 - 2.9104e+823*Iass^6*Ipss^4 + 6.259e+822*Iass^6*Ipss^3 - 4.675e+821*Iass^6*Ipss^2 + 1.3822e+820*Iass^6*Ipss - 1.274e+818*Iass^6 - 9.3568e+818*Iass^5*Ipss^7 - 4.6935e+821*Iass^5*Ipss^6 + 1.7061e+823*Iass^5*Ipss^5 + 4.2498e+822*Iass^5*Ipss^4 - 1.4212e+822*Iass^5*Ipss^3 + 1.1698e+821*Iass^5*Ipss^2 - 3.5674e+819*Iass^5*Ipss + 3.3235e+817*Iass^5 + 2.6944e+818*Iass^4*Ipss^7 + 1.4139e+821*Iass^4*Ipss^6 - 5.5779e+822*Iass^4*Ipss^5 + 3.5364e+821*Iass^4*Ipss^4 + 8.8699e+820*Iass^4*Ipss^3 - 1.0251e+820*Iass^4*Ipss^2 + 3.427e+818*Iass^4*Ipss - 3.2994e+816*Iass^4 - 3.0817e+817*Iass^3*Ipss^7 - 1.684e+820*Iass^3*Ipss^6 + 7.1549e+821*Iass^3*Ipss^5 - 1.0911e+821*Iass^3*Ipss^4 + 2.2845e+819*Iass^3*Ipss^3 + 3.0509e+818*Iass^3*Ipss^2 - 1.4497e+817*Iass^3*Ipss + 1.5403e+815*Iass^3 + 1.7492e+816*Iass^2*Ipss^7 + 9.9059e+818*Iass^2*Ipss^6 - 4.5414e+820*Iass^2*Ipss^5 + 8.4915e+819*Iass^2*Ipss^4 - 4.7913e+818*Iass^2*Ipss^3 + 5.1819e+816*Iass^2*Ipss^2 + 2.0939e+815*Iass^2*Ipss - 3.3148e+813*Iass^2 - 4.925e+814*Iass*Ipss^7 - 2.8771e+817*Iass*Ipss^6 + 1.4279e+819*Iass*Ipss^5 - 2.8537e+818*Iass*Ipss^4 + 1.9024e+817*Iass*Ipss^3 - 4.567e+815*Iass*Ipss^2 + 2.0052e+813*Iass*Ipss + 2.5668e+811*Iass + 5.5019e+812*Ipss^7 + 3.3009e+815*Ipss^6 - 1.7787e+817*Ipss^5 + 3.5944e+816*Ipss^4 - 2.4737e+815*Ipss^3 + 6.6123e+813*Ipss^2 - 5.6818e+811*Ipss)
and:
ddd_fcn =
function_handle with value:
@(IBss,Iass,Ipss)((Iass.*1.048540363105328e+34-6.864833896770217e+32).* ...
that will not fit so I truncated it. That will allow you to substitute the variables and get the array you need.
raha ahmadi
raha ahmadi on 6 Jul 2020
Dear Star Strider
I’m so grateful for your help. I couldnt handle my ODE coeffisients but now I can. it seems its implicit form and very different numbers ( numbers as large as 1e24 and also as small as 1e-9 make it difficult to solve. They are also nolinear. Odes15s seems does not work anymore ( In fact I m new in soling ODE.) I'll use your and John' s points. I' ll try one more time .
I hope best wishes for you and john
Raha
Star Strider
Star Strider on 6 Jul 2020
As always, our pleasure!
The ‘dde_fcn’ with the appropriate arguments should allow you to calculate ‘ddd’. I did not try that myself because I have no idea what the arguments should be.

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More Answers (1)

John D'Errico
John D'Errico on 5 Jul 2020
Your question seems to be one of solving a system of ODEs with a mass matrix. For example in the help for ODE45, we see this option:
ode45 can solve problems M(t,y)*y' = f(t,y) with mass matrix M that is
nonsingular. Use ODESET to set the 'Mass' property to a function handle
MASS if MASS(T,Y) returns the value of the mass matrix. If the mass matrix
is constant, the matrix can be used as the value of the 'Mass' option. If
the mass matrix does not depend on the state variable Y and the function
MASS is to be called with one input argument T, set 'MStateDependence' to
'none'. ODE15S and ODE23T can solve problems with singular mass matrices.
That seems to be the question you have posed.
H11*dydt+H12*dxdt=H13
H21*dydt+H22*dxdt=H23
So all you need to do is pass in the mass matrix as
M = [H11, H12;H21, H22];
If you compute these elements in symbolic form but still just numbers, then use double to convert them to double precsion numbers.

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