partfrac() function returning same expression
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syms s
% Given expression
F = partfrac((s^2+2*s+1)/(s^3-5*s+3),s)
The output is as follows.
F =
(s^2 + 2*s + 1)/(s^3 - 5*s + 3)
I know syms has a big part to do with it but im not sure exactly what.
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Respuestas (1)
Dyuman Joshi
el 31 de En. de 2024
Movida: Steven Lord
el 31 de En. de 2024
It gives the same expression as the output because the denominator can not be decomposed with the default factor format i.e. 'rational'.
You can specify a 'full' or 'real' factor mode but the output might not be easy to look at -
syms s
F1 = partfrac((s^2+2*s+1)/(s^3-5*s+3),s,'FactorMode','real')
F2 = partfrac((s^2+2*s+1)/(s^3-5*s+3),s,'FactorMode','full')
vpa(F2)
3 comentarios
Dyuman Joshi
el 31 de En. de 2024
I assume you mean to show the output with 4 significant digits -
syms s
F = partfrac((s^2+2*s+1)/(s^3-5*s+3),s,'FactorMode','full')
vpa(F, 4)
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