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P3=span{1,x,x*2}, define inner product on P3,
1
<f(x),g(x)> =∫ f(x)g(x)dx, let U = {f(x):f(0), f(x)屬於P3},
0
V = {g(x):g(-1)=0, g(x)屬於P3}
(1) find an orthogonal basis of U
(2) determine (U交集V)
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