Solve det(Q - AI) = 0 by the quadratic formula to reach A = cos () i sin (): Q __ [co. s
Chapter 6, Problem 14(choose chapter or problem)
Solve det(Q - AI) = 0 by the quadratic formula to reach A = cos () i sin (): Q __ [co. s () - sin ()] sm () cos () rotates the x y plane by the angle (). No real A'S. Find the eigenvectors of Q by solving (Q - AI)x = O. Use i 2 = -1.
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