NCERT Solutions For Class 12 Maths Chapter 3 Matrices Ex 3.4
Here, Below you all know about NCERT Solutions for Class 12 Maths Chapter 3 Matrices Ex 3.4 Question Answer. I know many of you confuse about finding Chapter 3 Matrices Ex 3.4 Of Class 12 NCERT Solutions. So, Read the full post below and get your solutions.
Textbook | NCERT |
Board | CBSE |
Category | NCERT Solutions |
Class | Class 12 |
Subject | Maths |
Chapter | Chapter 3 |
Exercise | Class 12 Maths Chapter 3 Matrices Exercise 3.4 |
Number of Questions Solved | 18 |

NCERT Solutions for Class 12 Maths Chapter 3 Matrices Ex 3.4
NCERT TEXTBOOK EXERCISES
Ex 3.4 Class 12 Maths Question 1.
$\begin{bmatrix} 1 & -1 \ 2 & 3 \end{bmatrix}$
Solution:
Let $A=\begin{bmatrix} 1 & -1 \ 2 & 3 \end{bmatrix}$
We know that
A = IA

Ex 3.4 Class 12 Maths Question 2.
$\begin{bmatrix} 2 & 1 \ 1 & 1 \end{bmatrix}$
Solution:
Let $A=\begin{bmatrix} 2 & 1 \ 1 & 1 \end{bmatrix}$
We know that
A = IA

Ex 3.4 Class 12 Maths Question 3.
$A=\begin{bmatrix} 1 & 3 \ 2 & 7 \end{bmatrix}$
Solution:
Let $A=\begin{bmatrix} 1 & 3 \ 2 & 7 \end{bmatrix}$
We know that
A = IA

Ex 3.4 Class 12 Maths Question 4.
$A=\begin{bmatrix} 2 & 3 \ 5 & 7 \end{bmatrix}$
Solution:
Let $A=\begin{bmatrix} 2 & 3 \ 5 & 7 \end{bmatrix}$
We know that
A = IA

Ex 3.4 Class 12 Maths Question 5.
$A=\begin{bmatrix} 2 & 1 \ 7 & 4 \end{bmatrix}$
Solution:
Let $A=\begin{bmatrix} 2 & 1 \ 7 & 4 \end{bmatrix}$
We know that
A = IA

Ex 3.4 Class 12 Maths Question 6.
$A=\begin{bmatrix} 2 & 5 \ 1 & 3 \end{bmatrix}$
Solution:
Let $A=\begin{bmatrix} 2 & 5 \ 1 & 3 \end{bmatrix}$
We know that
A = IA

Ex 3.4 Class 12 Maths Question 7.
$\begin{bmatrix} 3 & 1 \ 5 & 2 \end{bmatrix}$
Solution:
Let $A=\begin{bmatrix} 3 & 1 \ 5 & 2 \end{bmatrix}$
We know that
A = IA

Ex 3.4 Class 12 Maths Question 8.
$A=\begin{bmatrix} 4 & 5 \ 3 & 4 \end{bmatrix}$
Solution:
Let $A=\begin{bmatrix} 4 & 5 \ 3 & 4 \end{bmatrix}$
We know that
A = IA

Ex 3.4 Class 12 Maths Question 9.
$A=\begin{bmatrix} 3 & 10 \ 2 & 7 \end{bmatrix}$
Solution:
Let $A=\begin{bmatrix} 3 & 10 \ 2 & 7 \end{bmatrix}$
We know that
A = IA

Ex 3.4 Class 12 Maths Ex 3.4 Class 12 Maths Question 10.
$A=\begin{bmatrix} 3 & -1 \ -4 & 2 \end{bmatrix}$
Solution:
Let $A=\begin{bmatrix} 3 & -1 \ -4 & 2 \end{bmatrix}$


Ex 3.4 Class 12 Maths Question 11.
$A=\begin{bmatrix} 2 & -6 \ 1 & -2 \end{bmatrix}$
Solution:
Let $A=\begin{bmatrix} 2 & -6 \ 1 & -2 \end{bmatrix}$
We know that
A = IA

Ex 3.4 Class 12 Maths Question 12.
$\begin{bmatrix} 6 & -3 \ -2 & 1 \end{bmatrix}$
Solution:
Let $A=\begin{bmatrix} 6 & -3 \ -2 & 1 \end{bmatrix}$
We know that
A = IA

Ex 3.4 Class 12 Maths Question 13.
$A=\begin{bmatrix} 2 & -3 \ -1 & 2 \end{bmatrix}
Solution:
Let $A=\begin{bmatrix} 2 & -3 \ -1 & 2 \end{bmatrix}$
We know that
A = IA

Ex 3.4 Class 12 Maths Question 14.
$A=\begin{bmatrix} 2 & 1 \ 4 & 2 \end{bmatrix}$
Solution:
Let $A=\begin{bmatrix} 2 & 1 \ 4 & 2 \end{bmatrix}$
We know that
A = IA

Ex 3.4 Class 12 Maths Question 15.
$A=\left[ \begin{matrix} 2 & -3 & 3 \ 2 & 2 & 3 \ 3 & -2 & 2 \end{matrix} \right]$
Solution:
Let $A=\left[ \begin{matrix} 2 & -3 & 3 \ 2 & 2 & 3 \ 3 & -2 & 2 \end{matrix} \right]$




Ex 3.4 Class 12 Maths Question 16.
$A=\left[ \begin{matrix} 1 & 3 & -2 \ -3 & 0 & -5 \ 2 & 5 & 2 \end{matrix} \right]$
Solution:
Let $A=\left[ \begin{matrix} 1 & 3 & -2 \ -3 & 0 & -5 \ 2 & 5 & 2 \end{matrix} \right]$
We know that
A = IA



Ex 3.4 Class 12 Maths Question 17.
$A=\left[ \begin{matrix} 2 & 0 & -1 \ 5 & 1 & 0 \ 0 & 1 & 3 \end{matrix} \right]$
Solution:
Let $A=\left[ \begin{matrix} 2 & 0 & -1 \ 5 & 1 & 0 \ 0 & 1 & 3 \end{matrix} \right]$
We know that
A = IA


Ex 3.4 Class 12 Maths Question 18.
Choose the correct answer in the following question:
Matrices A and B will be inverse of each other only if
(a) AB = BA
(b) AB = BA = 0
(c) AB = 0,BA = 1
(d) AB = BA = I
Solution:
Choice (d) is correct
i.e., AB = BA = I
NCERT Solutions for Class 12 Maths Chapter 3 Matrices Exercise 3.4 PDF
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