Exercise 11.6.3 Determine which of the following matrices are orthogonal by checking whether the columns form an orthonormal set. A = XX -2 2 082 B = 0 2 200 C = 2-1 2 2-2 2-2 1 -1 D 3 40 4-3 0 0 05

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A: Simplification

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Q: Can part B be answered as well please?

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