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**Unformatted text preview: **-1 4 1 8 1 8 3 16 3. Mark the following as true or false. No justication is needed. (1 pt each) (a) If A is a square matrix, and A x = b has a unique solution for some b, then det A 6 = 0. TRUE (b) The matrix 1 1-1 2 1-2 1 3 1-3 4 1-4 1 is invertible. FALSE (c) If A and B are square matrices of the same size, det AB = det BA . TRUE...

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