![Ex 3.4, 1 (MCQ) - Matrices A and B will be inverse only if [Video] - Ex 3.4](https://cdn.teachoo.com/0cad55d4-55dd-4bd8-ac5d-e6ea56e0ac67/slide1.jpg)
Ex 3.4, 1 (MCQ) - Chapter 3 Class 12 Matrices
Last updated at August 2, 2026 by Teachoo
Inverse of matrix using elementary transformation
Elementary operations on a matrix
You are here
You are here
Chapter 3 Class 12 Matrices
Concept wise
- Formation and order of matrix
- Types of matrices
- Equal matrices
- Addition/ subtraction of matrices
- Statement questions - Addition/Subtraction of matrices
- Multiplication of matrices
- Statement questions - Multiplication of matrices
- Solving Equation
- Finding unknown - Element
- Finding unknown - Matrice
- Transpose of a matrix
- Symmetric and skew symmetric matrices
- Proof using property of transpose
-
Inverse of matrix using elementary transformation
- Proof using mathematical induction
Take a fresh quiz. Then take another.
Every attempt is a new AI-adaptive Teachoo quiz with 3 questions, selected from your answers, mistakes, and progress.
Transcript
Ex 3.4, 1 Matrices A and B will be inverse of each other only if A. AB = BA B. AB = BA = O C. AB = O, BA = I D. AB = BA = I Given that A & B will be inverse of each other i.e. A-1 = B & B-1 = A We know that From (1) & (2) AB = BA = I So, the correct answer is D From (1) & (2) AB = BA = I So, the correct answer is (D)
