Complete the magic square:
14 08 6114 7 2112
If x varies inversely as y, then
x□60y210
If H=⎡⎢⎣123231312⎤⎥⎦, G=⎡⎢⎣26−100−482−84⎤⎥⎦
Find 3H−12G. [3] (b) If 3A=⎡⎢⎣12221−2x2y⎤⎥⎦ and A⋅AT=I, then find the value of x+y. [3] (c) If A=[2513],B=[4−2−13] and I is Identity matrix of same order and At is the transpose of matrix A find At.B+BI. [4]