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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 following expression В +3(А-В)-2ВА with given matrix A and B:, А= , В= .
4. Given the vertices of a triangular A(-2;2;-1),B(2;-6;1),C(4;-7;-3). 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 =(2;-1;-3), b =(1;5;1)
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