I have the following 2x2 matrix: (1-A) 1 1 (5-A) I need to solve to get the Eigen values. How do i develop the quadratic eqn from that to solve for A?
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If I understand correctly, we have the matrix we can find the eigenvalues by The characteristic polynomial is given by Solve the quadratic to find the eigenvalues.
But how did you get the 6 and 4?
hmm So i get the determinant: (1 - A)(5 - A) - (1)(1) but how do i get to the next step? A^2 - 6A + 4
Originally Posted by taurus hmm So i get the determinant: (1 - A)(5 - A) - (1)(1) but how do i get to the next step? A^2 - 6A + 4 Common algebra. Expand the bracket and simplify. CB
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