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Recent questions and answers in Engineering Mathematics
0
votes
1
answer
GATE2019 ME2: 3
The differential equation $\frac{dy}{dx}+4y=5$ is valid in the domain $0 \leq x \leq 1$ with $y(0)=2.25$. The solution of the differential equation is $y=e^{4x}+5$ $y=e^{4x}+1.25$ $y=e^{4x}+5$ $y=e^{4x}+1.25$
answered
May 24
in
Differential Equations
by
ankitgupta.1729
(
390
points)
gate2019me2
0
votes
1
answer
GATE2019 ME2: 4
An analytic function $f(z)$ of complex variable $z=x+iy$ may be written as $f(z)=u(x,y)+iv(x,y)$. Then $u(x,y)$ and $v(x,y)$ ...
answered
May 24
in
Calculus
by
ankitgupta.1729
(
390
points)
gate2019me2
0
votes
1
answer
GATE2017 ME2: 28
Consider the matrix $A=\begin{bmatrix} 50 &70 \\ 70 & 80 \end{bmatrix}$ whose eigenvectors corresponding to eigenvalues $\lambda _{1}$ and $\lambda _{2}$ are $x_{1}=\begin{bmatrix} 70 \\ \lambda_{1}50 \end{bmatrix}$ and $x_{2}=\begin{bmatrix} \lambda _{2}80\\ 70 \end{bmatrix}$, respectively. The value of $x^{T}_{1} x_{2}$ is _________.
answered
May 24
in
Linear Algebra
by
ankitgupta.1729
(
390
points)
gate2017me2
0
votes
1
answer
GATE2019 ME2: 1
In matrix equation $[A] \{X\}=\{R\}$, $[A] = \begin{bmatrix} 4 & 8 & 4 \\ 8 & 16 & 4 \\ 4 & 4 & 15 \end{bmatrix} \{X\} = \begin{Bmatrix} 2 \\ 1 \\ 4 \end{Bmatrix} \text{ and} \{ R \} = \begin{Bmatrix} 32 \\ 16 \\ 64 \end{Bmatrix}$ One of the eigen values of matrix $[A]$ is $4$ $8$ $15$ $16$
answered
May 24
in
Linear Algebra
by
ankitgupta.1729
(
390
points)
gate2019me2
0
votes
1
answer
GATE2019 ME1: 1
Consider the matrix $P=\begin{bmatrix} 1 & 1 & 0 \\ 0 & 1 & 1 \\ 0 & 0 & 1 \end{bmatrix}$ The number of distinct eigenvalues $0$ $1$ $2$ $3$
answered
Feb 15
in
Linear Algebra
by
aditya_kr
(
140
points)
gate2019me1
0
votes
0
answers
GATE2019 ME2: 2
The directional derivative of the function $f(x,y)=x^2+y^2$ along a line directed from $(0,0)$ to $(1,1)$, evaluated at the point $x=1, y=1$ is $\sqrt{2}$ $2$ $2 \sqrt{2}$ $2 \sqrt{2}$
asked
Feb 9
in
Calculus
by
Arjun
(
21.2k
points)
gate2019me2
+1
vote
0
answers
GATE201264
An automobile plant contracted to buy shock absorbers from two suppliers $X$ and $Y.$ $X$ supplies $60\%$ and $Y$ supplies $40\%$ ... chosen shock absorber, which is found to be reliable, is made by $Y$ is $0.288$ $0.334$ $0.667$ $0.720$
asked
Mar 20, 2018
in
Probability and Statistics
by
Andrijana3306
(
1.5k
points)
gate2012me
probability
conditionalprobability
0
votes
1
answer
GATE2018224
The arrival of customers over fixed time intervals in a bank follow a Poisson distribution with an average of 30 customers/hour. The probability that the time between successive customer arrival is between 1 and 3 minutes is _____ (correct to two decimal places)
answered
Feb 22, 2018
in
Probability and Statistics
by
Balaji Jegan
(
1.2k
points)
gate2018me2
0
votes
1
answer
GATE2018227
Let $X_1$ and $X_2$ be two independent exponentially distributed random variables with means 0.5 and 0.25, respectively. Then $Y=\text{min}(X_1, X_2)$ is exponentially distributed with mean 1/6 exponentially distributed with mean 2 normally distributed with mean 3/4 normally distributed with mean 1/6
answered
Feb 22, 2018
in
Probability and Statistics
by
Balaji Jegan
(
1.2k
points)
gate2018me2
0
votes
1
answer
GATE2018219
If $A=\begin{bmatrix}1 & 2 & 3 \\ 0 & 4 & 5 \\ 0 & 0 & 1 \end{bmatrix}$ then $\text{det}(A^{1})$ is _______ (correct to two decimal palces).
answered
Feb 22, 2018
in
Linear Algebra
by
Balaji Jegan
(
1.2k
points)
gate2018me2
0
votes
0
answers
GATE2018235
The problem of maximizing $z=x_1x_2$ subject to constraints $x_1+x_2 \leq 10, \: x_1 \geq 0, x_2 \geq 0$ and $x_2 \leq 5$ has no solution one solution two solutions more than two solutions
asked
Feb 17, 2018
in
Numerical Methods
by
Arjun
(
21.2k
points)
gate2018me2
0
votes
0
answers
GATE2018236
Given the ordinary differential equation $\frac{d^2y}{dx^2}+\frac{dy}{dx}6y=0$ with $y(0)=0$ and $\frac{dy}{dx}(0)=1$, the value of $y(1)$ is _____ (correct to two decimal places).
asked
Feb 17, 2018
in
Differential Equations
by
Arjun
(
21.2k
points)
gate2018me2
0
votes
0
answers
GATE2018226
Let $z$ be a complex variable. FOr a counterclockwise integration around a unit circle $C$, centered at origin, $\oint \frac{1}{5z4} dz=A \pi i$, the value of $A$is 2/5 1/2 2 4/5
asked
Feb 17, 2018
in
Numerical Methods
by
Arjun
(
21.2k
points)
gate2018me2
0
votes
0
answers
GATE2018228
For a position vector $\overrightarrow{r} = x \hat{i}+y \hat{j} + z\hat{k}$ the norm of the vector can be defined as $\mid \overrightarrow{r} \mid = \sqrt{x^2+y^2+z^2}$. Given a function $\phi =\text{ln} \mid \overrightarrow{r} \mid$, ... $\frac{\overrightarrow{r}}{\overrightarrow{r} \bullet \overrightarrow{r} } $ $\frac{\overrightarrow{r}}{\mid \overrightarrow{r} \mid^3} $
asked
Feb 17, 2018
in
Calculus
by
Arjun
(
21.2k
points)
gate2018me2
0
votes
0
answers
GATE201822
The divergence of the vector field $\overrightarrow{u}=e^x(\cos \: y\hat{i}+\sin \: y \hat{j})$ is $0$ $e^x \cos y + e^x \sin y$ $2e^x \cos y$ $2e^x \sin y$
asked
Feb 17, 2018
in
Calculus
by
Arjun
(
21.2k
points)
gate2018me2
0
votes
0
answers
GATE201823
Consider a function $u$ which depends on position $x$ and time $t$. The partial differential equation $\frac{\partial u}{\partial t} = \frac{\partial^2 u }{\partial x^2}$ is known as the Wave equation Heat equation Laplace's equation Elasticity equation
asked
Feb 17, 2018
in
Differential Equations
by
Arjun
(
21.2k
points)
gate2018me2
0
votes
0
answers
GATE201824
If $y$ is the solution of the differential equation $y^3 \frac{dy}{dx}+x^3 = 0, \: y(0)=1,$ the value of $y(1)$ is 2 1 0 1
asked
Feb 17, 2018
in
Differential Equations
by
Arjun
(
21.2k
points)
gate2018me2
0
votes
0
answers
GATE201821
The Fourier cosine series for an even function $f(x)$ is given by $ f(x)=a_0 + \Sigma_{n=1}^\infty a_n \cos (nx).$ The value of the coefficient $a_2$ for the function $f(x)=\cos ^2 (x)$ in $[0, \pi]$ is 0.05 0.0 0.5 1.0
asked
Feb 17, 2018
in
Calculus
by
Arjun
(
21.2k
points)
gate2018me2
0
votes
0
answers
GATE2018151
The minimum value of $3x+5y$ such that $3x+5y \leq 15$ $4x+9y \leq 18$ $13x+2y \leq 2$ $x \geq 0, \: y \geq 0$ is ______
asked
Feb 17, 2018
in
Numerical Methods
by
Arjun
(
21.2k
points)
gate2018me1
0
votes
0
answers
GATE201812
The rank of the matrix $\begin{bmatrix} 4 & 1 & 1 \\ 1 & 1 & 1 \\ 7 & 3 & 1 \end{bmatrix}$ is 1 2 3 4
asked
Feb 17, 2018
in
Linear Algebra
by
Arjun
(
21.2k
points)
gate2018me1
0
votes
0
answers
GATE201811
Four red balls, four green balls and four blue balls are put in a box. Three balls are pulled out of the box at random one after another without replacement. The probability that all the three balls are red is 1/72 1/55 1/36 1/27
asked
Feb 17, 2018
in
Probability and Statistics
by
Arjun
(
21.2k
points)
gate2018me1
0
votes
0
answers
GATE201814
$F(z)$ is a function of the complex variable $z=x+iy$ given by $F(z)+ i \: z + k \: Re(z) + Im(z)$. For what value of $k$ will $F(z)$ satisfy the CauchyRiemann equations? 0 1 1 y
asked
Feb 17, 2018
in
Calculus
by
Arjun
(
21.2k
points)
gate2018me1
0
votes
0
answers
GATE201813
According to the Mean Value Theorem, for a continuous function $f(x)$ in the interval $[a,b]$, there exists a value $\xi$ in this interval such that $\int_a^b f(x) dx = $ $f(\xi)(ba)$ $f(b)(\xia)$ $f(a)(b\xi)$ $0$
asked
Feb 17, 2018
in
Calculus
by
Arjun
(
21.2k
points)
gate2018me1
0
votes
1
answer
GATE2017 ME2: 3
The determinant of a $2 \times 2$ matrix is $50$. If one eigenvalue of the matrix is $10$, the other eigenvalue is _________.
answered
Feb 14, 2018
in
Linear Algebra
by
m2n037
(
940
points)
gate2017me2
0
votes
0
answers
GATE2017 ME2: 27
Consider the differential equation $3y" (x)+27 y (x)=0$ with initial conditions $y(0)=0$ and $y'(0)=2000$. The value of $y$ at $x=1$ is ________.
asked
Feb 27, 2017
in
Differential Equations
by
Arjun
(
21.2k
points)
gate2017me2
0
votes
0
answers
GATE2017 ME2: 4
A sample of $15$ data is as follows: $17, 18, 17, 17, 13, 18, 5, 5, 6, 7, 8, 9, 20, 17, 3$. The mode of the data is $4$ $13$ $17$ $20$
asked
Feb 27, 2017
in
Linear Algebra
by
Arjun
(
21.2k
points)
gate2017me2
0
votes
0
answers
GATE2017 ME2: 5
The Laplace transform of $te^{t}$ is $\frac{s}{(s+1)^{2}}$ $\frac{1}{(s1)^{2}}$ $\frac{1}{(s+1)^{2}}$ $\frac{s}{(s1)}$
asked
Feb 27, 2017
in
Calculus
by
Arjun
(
21.2k
points)
gate2017me2
0
votes
0
answers
GATE2017 ME2: 2
The divergence of the vector $yi+xj$ is ________.
asked
Feb 27, 2017
in
Linear Algebra
by
Arjun
(
21.2k
points)
gate2017me2
0
votes
0
answers
GATE2017 ME2: 1
Two coins are tossed simultaneously. The probability (upto two decimal points accuracy) of getting at least one head is _______.
asked
Feb 27, 2017
in
Linear Algebra
by
Arjun
(
21.2k
points)
gate2017me2
0
votes
0
answers
GATE2017 ME1: 26
Consider the matrix $P=\begin{bmatrix} \frac{1}{\sqrt{2}} & 0 &\frac{1}{\sqrt{2}} \\ 0 & 1 & 0\\ \frac{1}{\sqrt{2}} &0 & \frac{1}{\sqrt{2}} \end{bmatrix}$ Which one of the following statements about $P$ is INCORRECT ? Determinant of P is equal to $1$. $P$ is orthogonal. Inverse of $P$ is equal to its transpose. All eigenvalues of $P$ are real numbers.
asked
Feb 27, 2017
in
Linear Algebra
by
Arjun
(
21.2k
points)
gate2017me1
0
votes
0
answers
GATE2017 ME1: 2
The value of $\lim_{x \rightarrow 0}\frac{x^{3}\sin(x)}{x}$ is $0$ $3$ $1$ $1$
asked
Feb 27, 2017
in
Calculus
by
Arjun
(
21.2k
points)
gate2017me1
0
votes
0
answers
GATE2017 ME1: 3
Consider the following partial differential equation for $u(x, y)$, with the constant $c > 1$: $\frac{\partial u}{\partial y}+c\frac{\partial u}{\partial x}=0$ Solution of this equation is $u(x, y) = f (x+cy)$ $u(x, y) = f (xcy)$ $u(x, y) = f (cx+y)$ $u(x, y) = f (cxy)$
asked
Feb 27, 2017
in
Linear Algebra
by
Arjun
(
21.2k
points)
gate2017me1
0
votes
0
answers
GATE2017 ME1: 1
The product of eigenvalues of the matrix $P$ is $P=\begin{bmatrix} 2 & 0 & 1\\ 4& 3 &3 \\ 0 & 2 & 1 \end{bmatrix}$ $6$ $2$ $6$ $2$
asked
Feb 27, 2017
in
Linear Algebra
by
Arjun
(
21.2k
points)
gate2017me1
0
votes
0
answers
GATE20133
Match the CORRECT pairs: Numerical Integration Scheme Order of Fitting Polynomial P. Simpson's 3/8 Rule 1. First Q. Trapezoidal Rule 2. Second R. Simpson's 1/3 Rule 3. Third $P2; Q1; R3$ $P3; Q2; R1$ $P1; Q2; R3$ $P3; Q1; R2$
asked
Feb 19, 2017
in
Numerical Methods
by
piyag476
(
1.4k
points)
gate2013me
0
votes
0
answers
GATE20131
The partial differential equation $\frac{\partial u }{\partial t}+u\frac{\partial u}{\partial x}=\frac{\partial^2 u}{\partial x^2}$ is a linear equation of order $2$ nonlinear equation of order $1$ linear equation of order $1$ nonlinear equation of order $2$
asked
Feb 19, 2017
in
Differential Equations
by
piyag476
(
1.4k
points)
gate2013me
0
votes
0
answers
GATE20132
The eigen values of a symmetric matrix are all complex with nonzero positive imaginary part. complex with nonzero negative imaginary part. real. pure imaginary.
asked
Feb 19, 2017
in
Linear Algebra
by
piyag476
(
1.4k
points)
gate2013me
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