In each part, use the result in Exercise 27(a) to determine whether multiplication by A
Chapter 7, Problem 28(choose chapter or problem)
In each part, use the result in Exercise 27(a) to determine whether multiplication by A is a rotation or a reflection followed by rotation. Find the angle of rotation in both cases, and in the case where it is a reflection followed by a rotation find an equation for the line through the origin referenced in Exercise 27(b). (a) A = 1 2 1 2 1 2 1 2 (b) A = 1 2 3 2 3 2 1 2
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