Q.4 If A= `[[0,1,-2],[-1,0,5],[2,5,0]]`, then
(a)A'=A
(b)A'=-A
(c)A'=2A
(d) None of these

If a (A) x=0 (B) x=1 (C) x=2 (D) None of these.

If A=[(0,0,0,0),(0,0,0,0),(1,0,0,0),(0,1,0,0)] then (A) A^2=I (B) A^2=0 (C) A^3=0 (D) none of these

If A=[[2,1,3],[4,1,0]], B=[[1,-1],[0,2],[5,0]] , verify that (AB)\'=B\'A\'

If [(2x+y,0),(5,x)] = [(5,0),(5,3)] then y is equal to (a) 1 (b) 3 (c) 2 (d) -1

If cos A+cos^(2)A=1, then sin^(2)A+sin^(4)A=-1(b)0(c)1(d) None of these

If A=[[2,1,3],[4,1,0]] and B=[[1,-1],[0,2],[5,0]] , verify that (AB)\'=B\'A\'

786-:24xx?=6.55(a)0.2(b)0.4(c)4(d)5(e) None of these

400-:0.1xx0.2=?(a)0.8(b)8(c)80(d)8000(e) None of these

Let A=[[5,0-1,0]] and B=[[0,1-1,0]]. If 4A+5B-C=0 then C is (A) [[5,25-1,0]] (B) [[2,5-1,0]] (C) [[5,-10,25]] (D) none of these

Let A=[1 2 3-5] and B=[1 0 0 2] and X be a matrix such that A=B X , then X is equal to 1/2[2 4 3-5] (b) 1/2[-2 4 3 5] (c) [2 4 3-5] (d) none of these