1. Assume that {U1, U2, U3, U4} is an orthogonal basis for for R4, where U1 = (1,2,1,1), U2 = (-2,1,-1,1), uz = (1,1, -2
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1. Assume that {U1, U2, U3, U4} is an orthogonal basis for for R4, where U1 = (1,2,1,1), U2 = (-2,1,-1,1), uz = (1,1, -2
1. Assume that {U1, U2, U3, U4} is an orthogonal basis for for R4, where U1 = (1,2,1,1), U2 = (-2,1,-1,1), uz = (1,1, -2, -1), 44 = (-1,1,1,-2) and x = - = > Using theorem 5, write x as a linear combination of U1, U2, U3, U4. DO NOT DO ROW REDUCTION!
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