[[1,4,-2],[-2,-5,4],[1,-2,1]]

If the rank of the matrix [[-1,2,5],[2,-4,a-4],[1,-2,a+1]] is 1 then the value of a is (A) -1 (B) 2 (C) -6 (D) 4

If the rank of the matrix [[-1,2,5],[2,-4,a-4],[1,-2,a+1]] is 1 then the value of a is (A) -1 (B) 2 (C) -6 (D) 4

If the rank of the matrix [[-1,2,5],[2,-4,a-4],[1,-2,a+1]] is 1 then the value of a is (A) -1 (B) 2 (C) -6 (D) 4

If A = [[1,1,-2],[2,1,-3],[5,4,-9]] , find |A|

If A = [(2,2,1), (1,3,1), (1,2,2)] then A^-1+(A-5I) (AI)^2 = (i) 1/ 5 [[4,2, -1], [-1,3,1], [-1,2,4]] (ii) 1/5 [[4, -2, -1], [-1, 3, -1], [-1, -2,4]] (iii) 1/3 [[4,2, -1], [-1,3,1], [-1,2,4]] (iv) 1/3 [[4, -2, -1], [-1,3, -1], [-1, -2,4]]

Given A=[[1,2],[3,-1],[4,2]] , B=[[-1,4,-5],[2,1,0]] Show that ABneBA

Name the octants in which the following points lie: (1,2,3),(4,-2,3),(4,-2,-5),(4,2,-5),(-4,2,-5),(-4,2,5),(-3,-1.6),(-2,-4,-7),(-3,1,2),(-3,1,-2)

The inverse of the matrix [(1,1,1),(1,0,2),(3,1,1)] is a) (1)/(4)[(-2,0,2),(5,-1,2),(1,-1,-2)] b) (1)/(4)[(-2,0,2),(5,-2,-1),(1,2,-1)] c) (1)/(4)[(-2,0,2),(2,5,-1),(-2,-1,1)] d) (1)/(4)[(-2,0,2),(5,-1,1),(1,-2,-1)]

If A = [(1,1,-2),(2,1,-3),(5,4,-9)] find |A| .

If A = {:[( 1,1,-2),(2,1,-3),(5,4,-9)] :} , find |A|