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