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1. Calculate the determinants
а) b) c)
2. Solve the given system of linear equations using a) Cramer’s Rule; b) matrix method; c) Gauss’ method. Compare the results:
3. Calculate the value of the expression ВА+2АВ+4(А-В+2Е) with given matrix A and B: А= , В= .
4. Given the vertices of a triangular A(-1;1;3),B(3;-2;4),C(8;0;7). Find the projections of the following vectors on the coordinate axes and the angle В.
5. Calculate the area of the parallelogram formed on the following vectors
а =(3;-1;1), b =(6;0;3).
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