Getting the real solutions of non-polynomial equations

Question

Ratan Rathore 2018-5-25

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/402538-getting-the-real-solutions-of-non-polynomial-equations

评论： sloppydisk 2018-5-25

Hello everyone, I want real solutions sets for 10 variables(a5,a4,a3,a2,a1,b6,b5,b4,b3,b2) out of 10 equations. The equations are on this link: http://textuploader.com/dfe39

I'm getting imaginary solutions using vpasolve() command but I am interested in only real solutions. And if the exact solution is not possible then I want a solution with some tolerance to get real solutions

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

sloppydisk 2018-5-25

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/402538-getting-the-real-solutions-of-non-polynomial-equations#answer_321927

在 MATLAB Online 中打开

What do you mean when you say you only want real solutions, don't you just want the correct solutions? You could take the real part of the solutions by

real(mySolutions)

2 个评论
显示无隐藏无

Ratan Rathore 2018-5-25

There are multiple sets of solutions possible. I am only interested in real solutions And if I just take the real part of the complex solutions then that will not satisfy those equations

sloppydisk 2018-5-25

Ah, then you might try running vpasolve multiple times with option 'random' set to true to run it for multiple starting points, might be very slow though.

That or using fsolve from the optimization toolbox with multiple starting points .

请先登录，再进行评论。

Getting the real solutions of non-polynomial equations

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

回答（1 个）

2 个评论
显示无隐藏无

另请参阅

类别

标签

产品

版本

Community Treasure Hunt

Getting the real solutions of non-polynomial equations

0 个评论 显示 -2更早的评论隐藏 -2更早的评论

回答（1 个）

2 个评论 显示 无隐藏 无

另请参阅

类别

标签

产品

版本

Community Treasure Hunt

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

2 个评论
显示无隐藏无