Question: Let a, b E R, and consider the matrix a + 26 0 OH A = 0 2b 0 -a 2b - a (a) Explain

Let a, b E R, and consider the matrix a + 26 0 OH A = 0 2b 0 -a 2b - a (a) Explain why A is not diagonalizable when a = 0. (3) (b) Assume that a * 0. In terms of a and b, where necessary, find matrices P and D that diagonalizes A. (3)

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