Find the standard matrix for the operator that (a) rotates each vector 90
Chapter 4, Problem 5(choose chapter or problem)
Find the standard matrix for the operator that (a) rotates each vector 90 counterclockwise about the z-axis (looking along the positive z-axis toward the origin). (b) rotates each vector 90 counterclockwise about the x-axis (looking along the positive x-axis toward the origin). (c) rotates each vector 90 counterclockwise about the y-axis (looking along the positive y-axis toward the origin).
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