SLOW FSOLVE AND FZERO

Hi Dear All,

In my matlab code, for 2000 parameters, I need to calculate output. It took 25 secs. When I use profile viewer, it was suggested that 80 % of running time consumed in one line fsolve parameter.

Lets assume x^3-x^2+x-1=0 and I need to solve this but fsolve is quite slow when there is a large data set?

Any suggestion to avoid this problem? Should I write new solver?

Answer 1

[Torsten]

I don't know whether it's faster, but use "roots" instead of "fsolve" for zeros of polynomials.

Best wishes

Torsten.

[Sukru]

I expect it to be much more slower because if I will solve it for every grid at each time step. I will try your suggestion, thank you

[Sukru]

Thank you after this , it decreased to 5 seconds from 25 seconds.