# NCERT Solutions Exercise 3.2: Matrices Notes | Study Mathematics (Maths) Class 12 - JEE

## JEE: NCERT Solutions Exercise 3.2: Matrices Notes | Study Mathematics (Maths) Class 12 - JEE

The document NCERT Solutions Exercise 3.2: Matrices Notes | Study Mathematics (Maths) Class 12 - JEE is a part of the JEE Course Mathematics (Maths) Class 12.
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``` Page 1

Exercise 3.2
Question 1:
Let
Find each of the following
(i)  (iv)
(i)
(ii)
(iii)
(iv) Matrix A has 2 columns. This number is equal to the number of rows in matrix B.
Therefore, AB is defined as:
( ii) ( iii) ( v)

Page 2

Exercise 3.2
Question 1:
Let
Find each of the following
(i)  (iv)
(i)
(ii)
(iii)
(iv) Matrix A has 2 columns. This number is equal to the number of rows in matrix B.
Therefore, AB is defined as:
( ii) ( iii) ( v)

(v) Matrix B has 2 columns. This number is equal to the number of rows in matrix A.
Therefore, BA is defined as:
Question 2:
Compute the following:
(i)
(iii)
(v)
(i)
( ii )
( ii)
Page 3

Exercise 3.2
Question 1:
Let
Find each of the following
(i)  (iv)
(i)
(ii)
(iii)
(iv) Matrix A has 2 columns. This number is equal to the number of rows in matrix B.
Therefore, AB is defined as:
( ii) ( iii) ( v)

(v) Matrix B has 2 columns. This number is equal to the number of rows in matrix A.
Therefore, BA is defined as:
Question 2:
Compute the following:
(i)
(iii)
(v)
(i)
( ii )
( ii)
Question 3:
Compute the indicated products
( iii )
( iv )
Page 4

Exercise 3.2
Question 1:
Let
Find each of the following
(i)  (iv)
(i)
(ii)
(iii)
(iv) Matrix A has 2 columns. This number is equal to the number of rows in matrix B.
Therefore, AB is defined as:
( ii) ( iii) ( v)

(v) Matrix B has 2 columns. This number is equal to the number of rows in matrix A.
Therefore, BA is defined as:
Question 2:
Compute the following:
(i)
(iii)
(v)
(i)
( ii )
( ii)
Question 3:
Compute the indicated products
( iii )
( iv )
(i)
(ii)
(iii)
(iv)
(v)
(vi)
Page 5

Exercise 3.2
Question 1:
Let
Find each of the following
(i)  (iv)
(i)
(ii)
(iii)
(iv) Matrix A has 2 columns. This number is equal to the number of rows in matrix B.
Therefore, AB is defined as:
( ii) ( iii) ( v)

(v) Matrix B has 2 columns. This number is equal to the number of rows in matrix A.
Therefore, BA is defined as:
Question 2:
Compute the following:
(i)
(iii)
(v)
(i)
( ii )
( ii)
Question 3:
Compute the indicated products
( iii )
( iv )
(i)
(ii)
(iii)
(iv)
(v)
(vi)
(iv)
(i)
( ii )
( iii )
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