Question

Q2. Answer this question by hand. Consider the matrix matrix A = 2 6 6 7...

Q2. Answer this question by hand. Consider the matrix

matrix A =

2 6
6 7
  1. Determine the eigenvalues and normalized eigenvectors of A
  2. Compare the trace of A to the sum of the eigenvalues of A.
  3. Compare the determinant of A to the product of the eigenvalues of A.
  4. Find A1 using elementary row operations. Be sure to indicate the elementary row operation used at each step of your calculation.
  5. Apply the formula A-1 = adj(A) = to obtain the inverse of A.

Q3. Consider the matrix A given in question Q2. Use R statistical software to determine the eigenvalues and normalized eigenvectors of A, trace of A, determinant of A, and inverse of A. Also determine the eigenvalues and normalized eigenvectors of A-1. Your answer should include your R code (annotated with comments) and a hand-written or typed summary of the answers from the R output

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