SLOW FSOLVE AND FZERO

2016 10 25
1 个回答
回答已采纳
更新时间：2016 10 25
5 次查看（30 天）

0 个投票

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?

请先登录，再回答此问题。

 采纳的回答

Torsten
Torsten 2016-10-25

0 个投票

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

2 个评论
显示 无 隐藏 无

Sukru
Sukru 2016-10-25
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
Sukru 2016-10-25
编辑：Sukru 2016-10-25
Thank you after this , it decreased to 5 seconds from 25 seconds.

请先登录，再进行评论。

更多回答（0 个）

类别

在 帮助中心 和 File Exchange 中查找有关 Creating and Concatenating Matrices 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by