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Question: 7equip vc 0 with the l2inner product...

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7-Equip V-C ( 0 π ) with the L2-inner product. Recall that in class we proved that {sinx, sin (2x), sin (3x)) is an orthogonal set in V. So by what was proved in Exercise 5, this set is a basis for the subspace G-Span(sinx,sin (2x),sin (3x)) of V. Determine the best approximation to f(x) -eby an element of G.

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