Eigenvalue/vector M^n=PD^nP^-1

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SUMMARY

The discussion focuses on solving the matrix equation M^n = PD^nP^-1, where eigenvalues and eigenvectors are crucial. The eigenvalues identified are 0 and 3, with corresponding eigenvectors (1,2) and (1,1). The participant encountered a 50% accuracy issue due to an incorrect calculation of the inverse of matrix P, specifically a sign error in row 2, column 1, which should be corrected to 2 instead of -2. Additionally, the order of matrices P and P^-1 was reversed, impacting the solution's validity.

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Homework Statement



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The Attempt at a Solution



First I found eigenvalues/vectors. Eigenvalues = 0, 3. Associated eigenvectors are (1,2) and (1,1). P= matrix of e. vectors, D = matrix of values.

Work.jpg


Solution.jpg


Not really sure where I'm going wrong, have gone through it a few times, but my answer is only 50% correct according to the computer program.
 
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Recalculate the inverse of P. Sign error in row2, column1, it should be 2 and not -2.
 
You also have P and P -1 reversed.
 

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