Q15 of 124 Page 167

Find the value of (x + y) from the following equation :

Given

So, 2+y = 5 and 2x+2 = 8

i.e y = 3 and x = 3

Therefore, x+y=6

Conclusion: Therefore x+y = 6

If A = diag [2, -5, 9], B = diag [-3, 7, 14] and C = diag [4, -6, 3], find:

(i) A + 2B

(ii)B + C – A

Find the value of x and y, when

If then write the value of (x + y).

1 A

Compute AB and BA, which ever exists when

and