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