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1.1 Let A= , calculate detA. (10 points)
basis denoted by B for Span S, and write each other vector in S by the basis vectors in B. (15 points)
1.3 Make a suitable orthogonal change of variables which transforms the following quadratic form to one without cross-product term. (Hint: write the matrix of the quadratic form first) ( 15 points)

11 Let A calculate detA 10 points basis denoted by B for Span S and write each other vector in S by the basis vectors in B 15 points 13 Make a suitable orthogon class=


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