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Eigenvalues of 3 x 3 matrix

Hi guys,

I am confused in what I am doing wrong. It could be the expanding of brackets or collecting like terms.

I am getting a completely different answer any help would be appreciated.

Sorry if it’s messy.

(edited 2 months ago)
Reply 1
Original post by safwans67
Hi guys,

I am confused in what I am doing wrong. It could be the expanding of brackets or collecting like terms.

I am getting a completely different answer any help would be appreciated.

Sorry if it’s messy.


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