9. (a) Find the special solutions to U.x = 0. Reduce U to R and repeat: X1 X2 11- X3 X4 (b) If the right-hand side is changed from (0.0.0) to (a, b,0), what are all solutions? 1 2 3 4 Ux= 0 0 12 0000 0

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A: Given:

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A: According to guidelines we can solve only first three subparts, please repost remaining subparts.

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