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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 (А2-В2)(В+А) with given matrix A and B:
4. Given the vertices of a triangular A(1;2;3), B(3;-2;1), C(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 =(-6;-3;2) b =(-3;2;-6)
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