Exercise 8.5.4. Take the 2 x 2 matrix A = ³) and consider the matrix A-X. I where A is a variable scalar and I is 3 the identity matrix. Compute det(A - XI). Using the 2 x 2 formula. Solve for A when setting this determinant equal to zero. Now for each solution solve the equation Ax = Ax for x. You have just found your first eigen-pair!

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