Q5 of 45 Page 1

Write A–1 for

Let the cofactors of aij of A be cij of C.


C11 = 3, C12 = -1, C21= -5 & C22= 2


Adj. A = T =


|A| = 6 – 5 = 1


A-1 =


A-1 =


More from this chapter

All 45 →
3

For a 2 × 2 matrix, A = [aij], whose elements are given by write the value of a12.

 4

For what value of x, the matrixis singular?

 6

Write the value of

7

Write the value of