Class 12 Mathematics 3 and 4 .Determinants and Matrices Adjoint and inverse of matrices

Easy

If $A^2-A+I=0$,then the inverse of the matrix $A$ is

WBJEE 2009 All WBJEE

A
$A-I$
B
$I-A$
C
$A+I$
D
$A$

Explore More

Browse All

Question Bank

All Subjects

Class 12 Questions

Class 12

Mathematics Questions

Chapter

3 and 4 .Determinants and Matrices

Subtopic

Adjoint and inverse of matrices

Previous Year

WBJEE 2009 Paper All WBJEE years →

Similar Questions

Let $A = \begin{bmatrix} 0 & 2q & r \\ p & q & -r \\ p & -q & r \end{bmatrix}$. If $AA^T = I_3$,then $|p|$ is

DifficultJEE MAIN 2019

If $A = \begin{bmatrix} a & 0 & 0 \\ 0 & a & 0 \\ 0 & 0 & a \end{bmatrix}$,then $|A| |adj A|$ is equal to

Difficult

If $A = \begin{bmatrix} 1 & 2 \\ -4 & -1 \end{bmatrix}$,then $A^{-1}$ is

Find the inverse of the matrix,if it exists: $\left[\begin{array}{cc}3 & 10 \\ 2 & 7\end{array}\right]$

Medium

If $A = \begin{bmatrix} -2 & 6 \\ -5 & 7 \end{bmatrix}$,then find $adj(A)$.

Medium

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial

For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.