NCERT Solutions for Class 12 Maths Chapter 3 Matrices Ex 3.4 are part of NCERT Solutions for Class 12 Maths . Here we have given NCERT Solutions for Class 12 Maths Chapter 3 Matrices Ex 3.4.

Board |
CBSE |

Textbook |
NCERT |

Class |
Class 12 |

Subject |
Maths |

Chapter |
Chapter 3 |

Chapter Name |
Matrices |

Exercise |
Ex 3.4 |

Number of Questions Solved |
18 |

Category |
NCERT Solutions |

## NCERT Solutions for Class 12 Maths Chapter 3 Matrices Ex 3.4

**Using Elementary transformation, find the inverse each of matrices, if it exists in ques 1 to 17.**

**Ex 3.4 Class 12 Maths Question 1.**

**Solution:**

Let

We know that

A = IA

**Ex 3.4 Class 12 Maths Question 2.**

**Solution:**

Let

We know that

A = IA

**Ex 3.4 Class 12 Maths Question 3.**

**Solution:**

Let

We know that

A = IA

**Ex 3.4 Class 12 Maths Question 4.**

**Solution:**

Let

We know that

A = IA

**Ex 3.4 Class 12 Maths Question 5.**

**Solution:**

Let

We know that

A = IA

**Ex 3.4 Class 12 Maths Question 6.**

**Solution:**

Let

We know that

A = IA

**Ex 3.4 Class 12 Maths Question 7.**

**Solution:**

Let

We know that

A = IA

**Ex 3.4 Class 12 Maths Question 8.**

**Solution:**

Let

We know that

A = IA

**Ex 3.4 Class 12 Maths Question 9.**

**Solution:**

Let

We know that

A = IA

**Ex 3.4 Class 12 Maths Ex 3.4 Class 12 Maths Question 10.**

**Solution:**

Let

**Ex 3.4 Class 12 Maths Question 11.**

**Solution:**

Let

We know that

A = IA

**Ex 3.4 Class 12 Maths Question 12.**

**Solution:**

Let

We know that

A = IA

**Ex 3.4 Class 12 Maths Question 13.**

**Solution:**

Let

We know that

A = IA

**Ex 3.4 Class 12 Maths Question 14.**

**Solution:**

Let

We know that

A = IA

**Ex 3.4 Class 12 Maths Question 15.**

**Solution:**

Let

**Ex 3.4 Class 12 Maths Question 16.**

**Solution:**

Let

We know that

A = IA

**Ex 3.4 Class 12 Maths Question 17.**

**Solution:**

Let

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

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