The Gateway to Computer Science Excellence
For all GATE CSE Questions
Toggle navigation
GATE Overflow
Facebook Login
or
Email or Username
Password
Remember
Login
Register

I forgot my password
Activity
Questions
Unanswered
Tags
Subjects
Users
Ask
Prev
Blogs
New Blog
Exams
First time here? Checkout the
FAQ
!
x
×
Close
Use the google search bar on side panel. It searches through all previous GATE/other questions. For hardcopy of previous year questions please see
here
Recent questions tagged matrix
+1
vote
1
answer
1
Nullity of matrix
Nullity of a matrix = Total number columns – Rank of that matrix By how to calculate value of x when nullity is already given(1 in this case)
asked
Jan 24
in
Linear Algebra
by
Nandkishor3939
Active
(
1.2k
points)

99
views
engineeringmathematics
linearalgebra
matrices
rankofmatrix
matrix
0
votes
1
answer
2
Made Easy Workbook
Let A be a 3*3 matrix whose characteristics roots are 3,2,1. If $B=A^2A$ then B=? a)24 b)2 c)12 d)12 Please explain in detail.
asked
Jan 19
in
Linear Algebra
by
Reshu $ingh
(
369
points)

82
views
linearalgebra
matrix
eigenvalue
0
votes
0
answers
3
GEEKS 4 GEEKS  gate cs mock 2018
An orthogonal matrix A has eigen values 1, 2 and 4. What is the trace of the matrix ? 7/4 1/7 7 4/7 Answer given : 7/4 My answer : 7 trace of a matrix is the sum of its diagonal elements.So on transposing the matrix the diagonal elements will ... is also equal to sum of eigen values.So trace of A = 7 So trace of transpose(A) should be 7. Is my reasoning right?
asked
Jan 3
in
Linear Algebra
by
vk_9_1_9
(
133
points)

55
views
matrix
0
votes
0
answers
4
Wiki example  Rouché–Capelli_theorem
What is the rank of the augmented matrix and coefficient matrix here ? x + y + 2z = 3, x + y + z = 1, 2x + 2y + 2z = 2 The example says it’s Augmented Matrix Rank is 3 and Coefficent Matrix Rank is 2, Can someone share the solution using echelon Form? This is a question from wiki page example here
asked
Jan 1
in
Set Theory & Algebra
by
Salazar
Active
(
1.1k
points)

23
views
matrix
rankofmatrix
discretemathematics
+1
vote
0
answers
5
Linearity of Matrix
$1)$What is linearly independent solution? Why it is depend on rank of matrix? (Linearly independent solution = no of rows of matrix rank of matrix) $I=NR$ $2)$ Why for unique solution of a matrix , determinant of matrix need to be nonzero? What should be determinant value for infinite solution?
asked
Nov 16, 2018
in
Linear Algebra
by
srestha
Veteran
(
110k
points)

44
views
matrix
0
votes
0
answers
6
Derive formula of the Matrix
How formula $Ae=e$ is valid? Can someone give an example? Here that formula is used here but I gavenot got clearity how this formula can be correct?
asked
Nov 9, 2018
in
Linear Algebra
by
srestha
Veteran
(
110k
points)

45
views
matrix
+1
vote
1
answer
7
Find Inverse
Inverse of this matrix $\begin{bmatrix} 2 &1 &1 \\ 3 &2 &1 \\ 2& 1 &2 \end{bmatrix}$ will be A)$\begin{bmatrix} 3 &4 &1 \\ 1 &2 &0 \\ 1 &1 &1 \end{bmatrix}$ B)$\begin{bmatrix} 3 &1 &1 \\ 4 &2 &1 \\ 1& 0 &1 \end{bmatrix}$
asked
Nov 3, 2018
in
Linear Algebra
by
srestha
Veteran
(
110k
points)

63
views
engineeringmathematics
matrix
+1
vote
0
answers
8
LINEAR ALGEBRA
IF A=$\begin{bmatrix} 2& 0.1\\ 0 & 3 \end{bmatrix}$ AND A1=$\begin{bmatrix} \frac{1}{2}& a\\ 0 & b \end{bmatrix}$ then a+b ? a)$\frac{7}{20}$ b)$\frac{3}{20}$ c)$\frac{19}{60}$ d)$\frac{11}{20}$
asked
Oct 27, 2018
in
Linear Algebra
by
altamash
(
431
points)

60
views
matrix
+2
votes
1
answer
9
Linear algebra
For matrix $p=\begin{bmatrix} 3 &2 &2 \\ 0 &2 &1 \\ 0& 0 & 1 \end{bmatrix}$if one of the eigen values is equal to – 2, then which of the following is an eigen vector? (a) [ 3 −2 1 ] (b) [ −3 2 −1 ] (c) [ 1 −2 3 ] (d) [ 5 2 0 ]
asked
Oct 21, 2018
in
Linear Algebra
by
sahil_malik
Junior
(
663
points)

160
views
matrix
linearalgebra
+1
vote
1
answer
10
Virtual Gate Test Series:Linear AlgebraRank Of The Matrix
asked
Oct 15, 2018
in
Linear Algebra
by
Prince Sindhiya
Loyal
(
6.3k
points)

36
views
engineeringmathematics
linearalgebra
matrix
rankofmatrix
virtualgatetestseries
0
votes
0
answers
11
Invertible Matrix
Let $A$ be a nilpotent matrix. Show that $I + A$ is invertible.
asked
Aug 8, 2018
in
Linear Algebra
by
pankaj_vir
Boss
(
10.3k
points)

75
views
engineeringmathematics
linearalgebra
matrices
matrix
0
votes
2
answers
12
Invertible Matrix
Let A be a $5 × 5$ invertible matrix with row sums $1$. That is $\sum_{j=1}^{5} a_{ij} = 1$ for $1 \leq i\leq 5$. Then, what is the sum of all entries of $A^{1}$.
asked
Aug 8, 2018
in
Linear Algebra
by
pankaj_vir
Boss
(
10.3k
points)

136
views
engineeringmathematics
linearalgebra
matrices
matrix
easy
0
votes
1
answer
13
Rank of a matrix
Let A be a 4×3 real matrix with rank 2. Let B be transpose matrix of A. Which one of the following statement is TRUE? (a) Rank of BA is less than 2. (b) Rank of BA is equal to 2. (c) Rank of BA is greater than 2. (d) Rank of BA can be any number between 1 and 3.
asked
Jun 21, 2018
in
Mathematical Logic
by
bts
(
159
points)

146
views
rankofmatrix
engineeringmathematics
matrix
0
votes
0
answers
14
Gilbert Strang  Real Symmetric Matrices
Prove that : For all real symmetric matrices , No. of positive Pivots = No . of positive eigenvalues Can anyone please give the formal mathematical proof for the above statement ?
asked
Jun 2, 2018
in
Linear Algebra
by
ankitgupta.1729
Boss
(
10.7k
points)

56
views
linearalgebra
gilbertstrang
matrix
engineeringmathematics
0
votes
1
answer
15
Gilbert Strang 1.3.9
For which three numbers $k$ does elimination break down? Which is fixed by a row exchange? In each case, is the number of solutions $0$ or $1$ Infinity? $Kx + 3 y =6\\3x +ky = 6$
asked
May 31, 2018
in
Engineering Mathematics
by
Sandy Sharma
Active
(
1.4k
points)

87
views
linearalgebra
gilbertstrang
matrix
0
votes
1
answer
16
self doubt
if $A^{3} = 0$ can we conclude that $A^{2} = A$ that will be valid for zero matrix
asked
Mar 4, 2018
in
Linear Algebra
by
Kaluti
Loyal
(
6k
points)

69
views
matrix
+1
vote
1
answer
17
Ee gate 2008
Let $P$ be a $2$ x $2$ real orthogonal matrix and ${\vec{x}}$ is a real vector $[x_1,x_2]^T$ with length ${\vec{x}}$ = ${(x_1^2 + x_2^2)^{1/2}}$. Then which one of the following statements is correct? A. $P{\vec{x}}$ $\leq$ ${\vec{x}}$ where ... satisfies $P{\vec{x}}$ >${\vec{x}}$ D. No relationship can be established between${\vec{x}}$ and $P{\vec{x}}$
asked
Mar 4, 2018
in
Linear Algebra
by
Prince Sindhiya
Loyal
(
6.3k
points)

146
views
gate2008ee
engineeringmathematics
matrix
vectorspace
0
votes
0
answers
18
Ee gate 2008
Let $P$ be a $2$ x $2$ real orthogonal matrix and ${\vec{x}}$ ia real vector $[x_1,x_2]^T$ with length ${\vec{x}}$ = ${(x_1^2 + x_2^2)^{1/2}}$. Then which one of the following statements is correct? A. $P{\vec{x}}$ $\leq$ ${\vec{x}}$ where at ... satisfies $P{\vec{x}}$ >${\vec{x}}$ D. No relationship can be established between${\vec{x}}$ and $P{\vec{x}}$
asked
Mar 3, 2018
in
Linear Algebra
by
Prince Sindhiya
Loyal
(
6.3k
points)

63
views
engineeringmathematics
matrix
+6
votes
1
answer
19
Eigen value
asked
Jan 13, 2018
in
Linear Algebra
by
Lakshman Patel RJIT
Boss
(
34.3k
points)

165
views
engineeringmathematics
linearalgebra
matrix
eigenvalue
+4
votes
1
answer
20
matrix adjoint
If $1,2,3$ are the eigen values of the matrix $A$ then ratio of determinant of $B$ to the trace of $B$ is_______where $B=[adj(A)AA^{1}A^{2}]$
asked
Jan 10, 2018
in
Linear Algebra
by
Lakshman Patel RJIT
Boss
(
34.3k
points)

126
views
engineeringmathematics
linearalgebra
matrix
+5
votes
1
answer
21
Matrix Eigen Value
A 3× 3 real matrix has an eigen value i, then its other two eigen values can be (A) 0, 1. (B) 1, i. (C) 2i, 2i. (D) 0, i.
asked
Nov 14, 2017
in
Mathematical Logic
by
Lakshman Patel RJIT
Boss
(
34.3k
points)

141
views
engineeringmathematics
linearalgebra
matrix
eigenvalue
+2
votes
0
answers
22
rank of matrix
The rank of the matrix of coefficients of a homogeneous system of m linear equations in n unknowns is never less than the rank of the augmented matrix. (A) Always true (B) Sometimes true (C) False (D) None of the above
asked
Nov 11, 2017
in
Linear Algebra
by
Parshu gate
Active
(
5.1k
points)

130
views
rankofmatrix
matrix
linearalgebra
engineeringmathematics
+5
votes
1
answer
23
Gilbert Strang
How many n*n (0,1) matrix are invertable ? PS: original question in book is for 2*2
asked
Oct 23, 2017
in
Linear Algebra
by
Tesla!
Boss
(
18.1k
points)

125
views
matrix
gilbertstrang
linearalgebra
+3
votes
1
answer
24
Find the last row of the Matrix
For the first one I have got 28 and 11 as the answer but for the matrix C I am not able to get the value of element c32. c31 = c33 = 6.
asked
Jul 24, 2017
in
Linear Algebra
by
Shubhanshu
Boss
(
19.2k
points)

159
views
engineeringmathematics
linearalgebra
matrix
eigenvalue
+6
votes
3
answers
25
Gate ECE 2017 Eigen Value
For the given matrix A, one of the Eigenvalue is real $A=\begin{bmatrix} 1 &2 &3 &4 &5 \\ 5 &1 &2 &3 &4 \\ 4&5 &1 &2 &3 \\ 3&4 &5 &1 &2 \\ 2 &3 &4 &5 &1 \end{bmatrix}$ The real Eigen value is:
asked
Feb 8, 2017
in
Linear Algebra
by
yg92
Active
(
3.4k
points)

1.2k
views
matrix
eigenvalue
+3
votes
1
answer
26
MATRIX
Let A be a $3 \times 3$ matrix with integer entries such that $A =1$. What is the maximum possible number of entries of A that are even?
asked
Jan 19, 2017
in
Set Theory & Algebra
by
Supremo
Junior
(
527
points)

249
views
matrix
matrices
linearalgebra
discretemathematics
0
votes
0
answers
27
Matrix
1. If the row reduced form of a matrix has more than two nonzero entries in a row, then the corresponding system of equations has infinitely many solutions. 2. If the row reduced form of a matrix has more than two nonzero entries in a row, then the ... many solutions or no solution. The given statements are respectively A. True, True B. True, False C. False, True D. False, False
asked
Jan 18, 2017
in
Linear Algebra
by
Samujjal Das
Loyal
(
9.7k
points)

62
views
matrix
0
votes
0
answers
28
Virtual gate
Two matrices A and B are called similar if there exists another matrix S such that S−1AS = B. Consider the statements: (I) If A and B are similar then they have identical rank. (I) If A and B are similar then they have identical trace. (III) Which of the following is TRUE. (A) Only I and III (B) Only II (C) Both I and II but not III (D) All of I, II and III
asked
Jan 18, 2017
in
Mathematical Logic
by
Sarvottam Patel
Active
(
1.1k
points)

59
views
matrix
+1
vote
1
answer
29
Rank of matrix
The rank of above matrix is 3 then what is that square sub matrix of order 3 whose determinant is not equal to 0.
asked
Jan 9, 2017
in
Linear Algebra
by
harshit agarwal
(
331
points)

827
views
matrix
rankofmatrix
matrices
linearalgebra
+1
vote
1
answer
30
how to solve
asked
Jan 6, 2017
in
Linear Algebra
by
firki lama
Junior
(
917
points)

89
views
orthogonal
matrix
eigenvalue
Page:
1
2
next »
Quick search syntax
tags
tag:apple
author
user:martin
title
title:apple
content
content:apple
exclude
tag:apple
force match
+apple
views
views:100
score
score:10
answers
answers:2
is accepted
isaccepted:true
is closed
isclosed:true
Recent Posts
How to prepare for IISC Interdisciplinary Mathematical Sciences Interview
GO Hardcopy for GATE 2020
How to prepare for BARC interview
IIIT H
Tips for COAP2019
Follow @csegate
Recent questions tagged matrix
Recent Blog Comments
What is the cutoff for M.Tech AI at IISc?
Yup. Hard copy contains a unique QR code for...
Lol. I got left out of IIT Kanpur GATE cutoff by...
Don't worry brother... i hope fate is also get...
50,049
questions
53,194
answers
184,528
comments
70,401
users