Want to solve for x

k=0.0023;

extent1=((100*x-2*x^2)/(1625-115*x+2*x^2))==k*(1);

solve (extent1,x)

I want to solve for x but when i input this I get the solution in the form of a formula instead of a number. How can I change is to that once it runs, the solution comes out in the form of a number

[James Tursa]

E.g.,

>> syms x
>> k=0.0023;
extent1=((100*x-2*x^2)/(1625-115*x+2*x^2))==k*(1);
solve (extent1,x)
ans =
 334215/13364 - (5*40092004761^(1/2))/40092
 (5*40092004761^(1/2))/40092 + 334215/13364
>> double(ans)
ans =
    0.0373
   49.9799

Note that this is really just polynomial roots. E.g.,

>> roots([-2 100 0] - k*[2 -115 1625])
ans =
   49.9799
    0.0373

Answer 1

[Steven Lord]

Call double or vpa on the output of solve.