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**Unformatted text preview: **R 6 (7c) Exactly one solution (8a) Linearly dependent (8b) No, they do not span R 3 (8c) They are linearly dependent, and therefore neither span R 3 nor form a basis for R 3 (8d) They are linearly independent, and therefore span R 3 and form a basis for R 3 (9) see 3.3.17 (10a) dim N ( A ) = 2 (10b) RREF ( A ) = 1 0 0 1 2 0 1 0 3 0 0 1 1-1 0 0 0 0 0 0 0 0 0 0 0 0 (11a) U-1 = ± 7-2-3 1 ² (11b) UV-1 = ± 31 10-13-3 ² 1...

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