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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 АВ-7В +3(А+В-2Е) with given matrix A and B:, А= , В= .
4. Given the vertices of a triangular A(3;-2;5),B(2;-3;4),C(-1;1;2).. 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 =(7;-5;0), b =(1;2;-4)
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