Question: 4. Let W = Span {b1, b2, b3 } C R4, where O O 0 b1 = b2 = b2 = ON WI 21 (a)

4. Let W = Span {b1, b2, b3 } C R4, where O O 0 b1 = b2 = b2 = ON WI 21 (a) (8 pts) Find an orthogonal basis for W. (b) (8 pts) Compute the orthogonal projection projwx, where X = HN (c) (4 pts) Find the orthogonal projection projwix (this is the orthogo- nal projection of x onto the orthogonal complement W . Hint: you do not need to find WI.)
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