如何在matlab中确定特征值?
假设我有一个由几个微分方程组成的复杂连续系统的模型,如下所示:
f = 1/(ura235 + 2.43*plu239 + 2.679*plu241)
d/dt ura236 = (.016*ura235 - 0.0012*uran236)*f
d/dt uran235 = -0.106*f*ura235
.
.
.
如何在Matlab中确定此类方程组的特征值,而无需手动形成雅可比矩阵?
任何帮助将不胜感激...
Assume I have the model of a complex continuous system which consists of several differential equations as follows:
f = 1/(ura235 + 2.43*plu239 + 2.679*plu241)
d/dt ura236 = (.016*ura235 - 0.0012*uran236)*f
d/dt uran235 = -0.106*f*ura235
.
.
.
How do I determine the eigenvalues of such series of equations in Matlab without having to manually form the Jacobian matrix?
Any help would be greatly appreciated...
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我认为你可以在不形成雅可比行列式的情况下做到这一点。如果这是一组非线性方程,则只需插入解的给定值并提取特征值即可。我相信 eig(A) 会为您做到这一点。
I think you can do this without forming the Jacobian. If this is a nonlinear set of equations, then simply plug in at a given value of the solution and extract eigenvalues. I believe eig(A) will do this for you.