Finding Eigen values from symbolics

[Durani]

Hi,

I want to obtain eigenvalues symbolic equation for the matrix. Any help would be greatly appreciated.

Attached file.

Regards

[LucMeekes]

Maybe this helps:

Success!
Luc

[Werner_E]

You missed the "s" in "eigenvals" and so "eigenval" is treated by the symbolics as an unknown/undefined function.

Unfortunately Prime seems not to be able to calculate the eigenvals of your matrix - I get an "unknown error".

[Durani]

I am getting same error...

[Werner_E]

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@Durani wrote:

I am getting same error...

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Sure 😉

But as the denominator of the elements in your matrix S is the same, you may help yourself by getting rid of it for the calculation of the eigenvalues and add it manually: