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1) Find ||u|| for the standard inner product defined in R3 , where u = (0,4,5)....

1) Find ||u|| for the standard inner product defined in R3 , where u = (0,4,5).

2) provided u = (5,-5,0,5) and v = (0,6,7,-5), solve 4w = u-v for w.

3) True or false: The set W = {(x1,11, x3 ): x1 and x3 are real numbers} is a subspace of R3 with the standard operations.

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