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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 А -5(А-Е)+ВА+3АВ with given matrix A and B:, А= , В== .
4. Given the vertices of a triangular A(-1;4;1),B(3;4;-2),C(5;2-1). Find the angle В and the projections of the following vectors on the coordinate axes .
5. Calculate the area of the parallelogram formed on the following vectors а =(2;-1;-3), b =(3;1;1)
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