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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 3(В+А)-АВ+В -3Е with given matrix A and B:, А= , В= .
4. Given the vertices of a triangular A(-1;-1;3),B(2;3;-1),C(8;5;1). 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 =(4;-3;6), b =(1;-2;5).
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