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Matrices

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Matrices

			Aktuelle Aktivität

Find x, y, z if (x+y, y−z),(z−2x, y−x) = (3,−1),(1,1) Maths Platter	0	0	2h

Find x and y if (3x−1,6),(4,2),(7,2) + (5,4),(−3,2y+3),(1,0) = (13,10),(1,7),(8,2) Maths Platter	0	0	2h

Find matrix X such that 3A - 2B + 4X = 5C, where A: (2,3),(4,7), B: (1,3),(4,6), C: (1,-1),(0,2) Maths Platter	0	0	2h

Prove B(A - C) = BA - BC if A: (1,-2),(4,3), B: (5,6),(7,8), C: (-2,0),(8,3) Maths Platter	0	0	2h

Prove A(B - C) = AB - AC if A: (1,-2),(4,3), B: (5,6),(7,8), C: (-2,0),(8,3) Maths Platter	0	0	2h

Find x and y if (3,2),(4,1) × (x,1),(5,y) = (4,5),(-3,5) Maths Platter	0	0	2h

Show that A² - 4A is a scalar matrix, given matrix A: (1,2,2),(2,1,2),(2,2,1) Maths Platter	0	0	2h

Show that B'AB is a null matrix, given A: (0,3,3),(-3,0,4),(-3,-4,0) and B: (x),(y),(z) Maths Platter	0	0	2h

Show A - (B - C) = A - B + C, given matrices A: (3,-1,2),(4,3,-5), B: (-1,2,4),(8,-1,3), C: (8,2,4),(-2,3,7) Maths Platter	0	0	21h

Show that (A + B)' = A' + B' and (A - B)' = A' - B', given matrices A: (3,-1,2),(4,3,-5) and B: (-1,2,4),(8,-1,3), Maths Platter	0	0	22h

Find x if [-3, 2] [-1; x] = [1] Maths Platter	0	0	13. März

Find x if [4, x, 1] [3; -2; x] = [8] Maths Platter	0	0	13. März

Find x if [4, x] [-x; x] = [21] Maths Platter	0	0	13. März

Find x if [5, x, -1] [2x; x; 4] = [20] Maths Platter	0	0	13. März

Find x if [x, 2x, 3x] [x; 2; -1] = [0] Maths Platter	0	0	13. März

Find x if [x, sin θ, cos θ] [x; sin θ; cos θ] = [5] Maths Platter	0	0	13. März

„Statistik ist die Grammatik der Wissenschaft.“

Karl Pearson