Login
Register
Dark Mode
Brightness
Profile
Edit Profile
Messages
My favorites
My Updates
Logout
Recent questions tagged matrix
3
votes
2
answers
91
GATE Chemical 2020 | GA Question: 9
For a matrix $M=[m_{ij}]; \: i,j=1,2,3,4$, the diagonal elements are all zero and $m_{ij}=-m_{ji}$. The minimum number of elements required to fully specify the matrix is ________ $0$ $6$ $12$ $16$
For a matrix $M=[m_{ij}]; \: i,j=1,2,3,4$, the diagonal elements are all zero and $m_{ij}=-m_{ji}$. The minimum number of elements required to fully specify the matrix is...
soujanyareddy13
3.7k
views
soujanyareddy13
asked
Nov 16, 2020
Quantitative Aptitude
gate2020-ch
quantitative-aptitude
numerical-computation
matrix
+
–
0
votes
0
answers
92
TIFR-2018-Maths-A: 11
True/False Question : Let $A,B,C \in M_{3} \left(\mathbb{R}\right)$ be such that $A$ commutes with $B$, $B$ commutes with $C$ and $B$ is not a scalar matrix. Then $A$ commutes with $C$.
True/False Question :Let $A,B,C \in M_{3} \left(\mathbb{R}\right)$ be such that $A$ commutes with $B$, $B$ commutes with $C$ and $B$ is not a scalar matrix. Then $A$ comm...
soujanyareddy13
149
views
soujanyareddy13
asked
Aug 29, 2020
Linear Algebra
tifrmaths2018
true-false
matrix
+
–
2
votes
3
answers
93
NIELIT 2016 MAR Scientist C - Section B: 3
The matrices $\begin{bmatrix} \cos\theta &-\sin \theta \\ \sin \theta & cos \theta \end{bmatrix}$ and $\begin{bmatrix} a & 0 \\ 0 & b \end{bmatrix}$ commute under the multiplication if $a=b \text{(or)} \theta =n\pi, \: n$ is an integer always never if $a\cos \theta \neq b\sin \theta$
The matrices $\begin{bmatrix} \cos\theta &-\sin \theta \\ \sin \theta & cos \theta \end{bmatrix}$ and $\begin{bmatrix} a & 0 \\ 0 & b \end{bmatrix}$ commute under t...
admin
707
views
admin
asked
Apr 2, 2020
Linear Algebra
nielit2016mar-scientistc
linear-algebra
matrix
+
–
1
votes
0
answers
94
NIELIT 2016 MAR Scientist C - Section B: 19
If product of matrix $A=\begin{bmatrix}\cos^{2}\theta &\cos \theta \sin \theta \\ \cos \theta \sin \theta &\sin ^{2} \theta& \end{bmatrix}$ ... by an odd multiple of $\pi$ even multiple of $\pi$ odd multiple of $\dfrac{\pi}{2}$ even multiple of $\dfrac{\pi}{2}$
If product of matrix $A=\begin{bmatrix}\cos^{2}\theta &\cos \theta \sin \theta \\ \cos \theta \sin \theta &\sin ^{2} \theta& \end{bmatrix}$ and $B=\begin{bmatrix}\cos^{2...
admin
506
views
admin
asked
Apr 2, 2020
Linear Algebra
nielit2016mar-scientistc
linear-algebra
matrix
+
–
0
votes
1
answer
95
NIELIT 2017 OCT Scientific Assistant A (IT) - Section B: 7
$M$ is a square matrix of order $’n’$ and its determinant value is $5.$ If all the elements of $M$ are multiplied by $2,$ its determinant value becomes $40.$ The value of $’n’$ is $2$ $3$ $5$ $4$
$M$ is a square matrix of order $’n’$ and its determinant value is $5.$ If all the elements of $M$ are multiplied by $2,$ its determinant value becomes $40.$ The valu...
admin
579
views
admin
asked
Apr 1, 2020
Linear Algebra
nielit2017oct-assistanta-it
linear-algebra
matrix
determinant
+
–
1
votes
2
answers
96
NIELIT 2017 OCT Scientific Assistant A (CS) - Section C: 9
$M$ is a square matrix of order $’n’$ and its determinant value is $5.$ If all the elements of $M$ are multiple by $2,$ its determinant value becomes $40.$ The value of $’n’$ is $2$ $3$ $5$ $4$
$M$ is a square matrix of order $’n’$ and its determinant value is $5.$ If all the elements of $M$ are multiple by $2,$ its determinant value becomes $40.$ The value ...
admin
1.4k
views
admin
asked
Apr 1, 2020
Linear Algebra
nielit2017oct-assistanta-cs
engineering-mathematics
linear-algebra
matrix
determinant
+
–
2
votes
2
answers
97
NIELIT 2016 DEC Scientist B (CS) - Section B: 21
Let $A,B,C,D$ be $n\times n$ matrices, each with non-zero determinant. If $ABCD=1$, then $B^{-1}$ is: $D^{-1}C^{-1}A^{-1}$ $CDA$ $ADC$ Does not necessarily exist.
Let $A,B,C,D$ be $n\times n$ matrices, each with non-zero determinant. If $ABCD=1$, then $B^{-1}$ is:$D^{-1}C^{-1}A^{-1}$$CDA$$ADC$Does not necessarily exist.
admin
762
views
admin
asked
Mar 31, 2020
Linear Algebra
nielit2016dec-scientistb-cs
engineering-mathematics
linear-algebra
matrix
determinant
+
–
Page:
« prev
1
2
3
4
5
6
7
8
9
...
13
next »
Email or Username
Show
Hide
Password
I forgot my password
Remember
Log in
Register