If , then the value of x, y and z are respectively
5, 2, 2
1, - 2, 3
0, - 3, 3
11, 8, 3
B.
1, - 2, 3
Which one of the following is true always for any two non-singular matrices A and B of same order ?
AB = BA
(AB)t = AtBt
(A + B)(A - B) = A2 - B2
(AB)- 1 = B- 1A- 1
The vectors of magnitude a, 2a, 3a meet at a point and their directions are along the diagonals of three adjacent faces of a cube. Then, the magnitude of their resultant is
5a
6a
10a
9a