Matlab fsolve 传递参数

使用Matlab fsolve与循环解决参数化方程组

最新推荐文章于 2025-09-11 15:18:07 发布

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最新推荐文章于 2025-09-11 15:18:07 发布 · 6.5k 阅读

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本文探讨如何在Matlab中利用fsolve函数和循环处理包含常数参数的非线性方程组。当有多个不同常数集（如C1到C10的5种组合）时，而不是手动多次重写方程，可以尝试在自定义函数@myfun内实现循环，以此求解10个未知数。示例中建议使用匿名函数来捕获问题的参数，通过将特定的c值赋给参数，创建一个一元匿名函数调用myfun，并将此匿名函数传递给fsolve。

Suppose I have 10 equations and 10 unknowns. In the equations there are 10 constants that I don’t optimize, say C1,C2,…C10.

Is there a way to use Fsolve and Loops to solve my equations if I have 5 different sets of constants ( 5 times C1,C2,…C10) that satisfy my original 10 equations. Simply put, instead of rewriting my 10 equations and 10 unknowns… 5 times by hand, is there a way to loop inside the @myfun m-file I wrote to solve for my 10 unknowns?

Use anonymous functions, available in MATLAB since R14 I believe.

From fsolve help:

If FUN is parameterized, you can use anonymous functions to capture the problem-dependent parameters. Suppose you want to solve the system of nonlinear equations given in the function myfun, which is parameterized by its second argument c. Here myfun is an M-file function such as