# NCERT Solutions for Class 12 Maths Exercise 3.4

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## NCERT Solutions for Class 12 Maths Exercise 3.4

### Matrics Solutions

#### Q 14)

Using elementary transformation, find the inverse of each of the matrices, if it exists in Exercises 15 to 17.

let A =

Let A =

Let A =

#### Q 18)  Matrices A and B will be inverse of each other only if:

(A) AB = BA
(B) AB = BA = 0
(C) AB = 0, BA = I
(D) AB = BA = I