﻿ Find the inverse of the matrix . : Kaysons Education

# Find The Inverse Of The matrix .

#### Video lectures

Access over 500+ hours of video lectures 24*7, covering complete syllabus for JEE preparation.

#### Online Support

Practice over 30000+ questions starting from basic level to JEE advance level.

#### National Mock Tests

Give tests to analyze your progress and evaluate where you stand in terms of your JEE preparation.

#### Organized Learning

Proper planning to complete syllabus is the key to get a decent rank in JEE.

#### Test Series/Daily assignments

Give tests to analyze your progress and evaluate where you stand in terms of your JEE preparation.

## Question

### Solution

Correct option is

– 2

We have

, expanding the determinant along the first

= –2.

Now the cofactors of the elements of the first row of

i.e., are –1, 8, –5 respectively.

The cofactors of the elements of the second row of

i.e., are 1, –6 3 respectively.

The cofactors of the elements of the their row of

i.e., are –1, 2, –1 respectively.

Therefore the Adj. A = the transpose of the matrix B where

#### SIMILAR QUESTIONS

Q1

then the number of solutions of the system of equations

Q4

For what value of k do the following homogeneous system of equations possess a non-trivial solution ?

Q5

Find value of  for which the set of equations

are consistent.

Q6
Q7

Find the product of the matrices

.

Q10

If A and B are any 2 × 2 matrices, then det (A + B) = 0 implies