I need to find 'x' in this nonlineral equation

1 次查看（过去 30 天）
alireza farrokh
alireza farrokh 2018-2-24
回答： Walter Roberson 2018-2-24
I need to find 'x' in here: i have 'a=0;2;20' and 'ei' is an exponential integral known in matlab. My nonlinearal equation is 'ei(x)=9/a' or 'ei(x)-(9/a)=0' . how can i find 'x' using fsolve?

请先登录，再回答此问题。

采纳的回答

Walter Roberson
Walter Roberson 2018-2-24
a = 0 : 2 : 20;
arrayfun(@(A) fsolve(@(x) ei(x)-9/A, 1, optimoptions('fsolve','Display','off')), max(a,1e-8) )
the max() is there to prevent 9/A from being infinity at A near 0.

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Systems of Nonlinear Equations 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