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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 АВ–ВА, (А–В)2, 2А–3В with given matrix A and B: і ..
1.Given the vertices of a triangular A(2;3;-4), B(-1;2;1), C(3;4;2). Find the projections of the following vectors on the coordinate axes and the angle В.
2.Calculate the area of the parallelogram formed on the following vectors
а =(-2;-5;-7), b =(5;5;6)
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