= (a) For what values of a, b, and c is the following matrix symmetric? -3...

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= (a) For what values of a, b, and c is the following matrix symmetric? -3 8a-c 8a+2b a 2 3 a +6b (b) An nxn matrix A is called skew-symmetric if AT = -A. What values of a, b, c, and d now make the following matrix skew-symmetric? d a a a +6b 8a-c 8a + 2b 0 3-7d с 0 = (a) For what values of a, b, and c is the following matrix symmetric? -3 8a-c 8a+2b a 2 3 a +6b (b) An nxn matrix A is called skew-symmetric if AT = -A. What values of a, b, c, and d now make the following matrix skew-symmetric? d a a a +6b 8a-c 8a + 2b 0 3-7d с 0