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Recent questions and answers in Calculus
2
2 votes
1
1 answer
661
661 views
GATE ECE 2015 Set 1 | Question: 2
A function $f(x)=1-x^2+x^3$ is defined in the closed interval $[-1,1]$. The value of $x$, in the open interval $(-1,1)$ for which the mean value theorem is satisfied, is$...
Rekhaaaaa
661
views
answered
5 days
ago
Calculus
gate2015-ec-1
calculus
mean-value-theorem
+
–
0
0 votes
0
0 answers
187
187 views
GATE ECE 2026 | Question: 26
Consider the two series, $S_{A}$ and $S_{B}$, where\[\begin{array}{l}S_{A}=\sum_{n=1}^{\infty} \frac{n^{2}}{2^{n}} \\S_{B}=1+\frac{1}{2}+\frac{1}{8}+\frac{1}{16}+\frac{1}...
gatecse
187
views
asked
Feb 23
Calculus
gateec-2026
series
convergence-criteria
calculus
engineering-mathematics
+
–
0
0 votes
0
0 answers
178
178 views
GATE ECE 2026 | Question: 51
Consider the square region $R$ in the $X-Y$ plane as shown with the dark shading in the Figure. The value of $\iint_{R}\left(x^{2}+y^{2}-1\right) d x d y$ is $\_\_\_\_$ ....
gatecse
178
views
asked
Feb 23
Calculus
gateec-2026
numerical-answers
calculus
+
–
0
0 votes
1
1 answer
607
607 views
GATE ECE 2014 Set 2 | Question: 4
The value of $$\lim_{x\rightarrow \infty }(1 +\tfrac{1}{x})^{x}$$ is$\text{ln }2$$1.0$$e$$\infty$
Prankush121
607
views
answered
Sep 7, 2025
Calculus
gate2014-ec-2
calculus
limits
+
–
0
0 votes
1
1 answer
557
557 views
GATE ECE 2016 Set 2 | Question: 3
As $x$ varies from $-1$ to $+3$, which one of the following describes the behaviour of the function $f(x)=x^{3}-3x^{2}+1?$$f(x)$ increases monotonically.$f(x)$ increases,...
legend_of_cse
557
views
answered
Aug 25, 2025
Calculus
gate2016-ec-2
calculus
maxima-minima
+
–
0
0 votes
1
1 answer
803
803 views
GATE ECE 2017 Set 2 | Question: 30
The minimum value of the function $f(x)=\frac{1}{3} x(x^2-3)$ in the interval $-100≤x≤100$ occurs at $x =$ ________.
legend_of_cse
803
views
answered
Aug 23, 2025
Calculus
gate2017-ec-2
numerical-answers
calculus
maxima-minima
+
–
0
0 votes
1
1 answer
720
720 views
GATE ECE 2019 | Question: 26
Consider a differentiable function $f(x)$ on the set of real numbers, such that $f(-1)=0$ and $ \mid f’(x) \mid \leq 2.$ Given these conditions, which one of the followin...
legend_of_cse
720
views
answered
Aug 23, 2025
Calculus
gate2019-ec
calculus
maxima-minima
+
–
0
0 votes
1
1 answer
542
542 views
GATE ECE 2016 Set 1 | Question: 3
Given the following statements about a function $f: \Bbb R \rightarrow \Bbb R$, select the right option:P: If $f(x)$ is continuous at $x = x_0$ then it is also different...
legend_of_cse
542
views
answered
Aug 21, 2025
Calculus
gate2016-ec-1
calculus
continuity-and-differentiability
+
–
0
0 votes
1
1 answer
447
447 views
GATE ECE 1993 | Question 2.1
$\lim _{x \rightarrow 0} \frac{x\left(e^{x}-1\right)+2(\cos x-1)}{x(1-\cos x)}$ is
Sujith K
447
views
answered
Aug 20, 2025
Calculus
gate1993-ec
calculus
limits
+
–
0
0 votes
0
0 answers
304
304 views
GATE ECE 2025 | Question: 2
Consider the following series:$\sum_{n=1}^{\infty} \frac{1}{\sqrt{n}}$$\sum_{n=1}^{\infty} \frac{1}{n(n+1)}$$\sum_{n=1}^{\infty} \frac{1}{n!}$Choose the correct option.On...
Shubham Sharma 2
304
views
asked
Mar 4, 2025
Calculus
gateec-2025
calculus
series
convergence-criteria
numerical-answers
+
–
0
0 votes
0
0 answers
458
458 views
GATE ECE 2025 | Question: 15
Consider the function $f: \mathbb{R} \rightarrow \mathbb{R}$, defined as$$ f(x)=2 x^{3}-3 x^{2}-12 x+1$$Which of the following statements is/are correct?(Here, $\mathbb{R...
Shubham Sharma 2
458
views
asked
Mar 4, 2025
Calculus
gateec-2025
calculus
maximum-power-transfer
+
–
0
0 votes
0
0 answers
760
760 views
GATE ECE 2025 | Question: 41
Consider a non-negative function $f(x)$ which is continuous and bounded over the interval $[2,8]$. Let $M$ and $m$ denote, respectively, the maximum and the minimum value...
Shubham Sharma 2
760
views
asked
Mar 4, 2025
Calculus
gateec-2025
calculus
+
–
1
1 vote
2
2 answers
786
786 views
GATE ECE 2008 | Question: 28
In the Taylor series expansion of $\exp (x)+\sin (x)$ about the point $x=\pi$, the coefficient of $(x-\pi)^{2}$ is$\exp (\pi)$$0.5 \exp (\pi)$$\exp (\pi)+1$$\exp (\pi)-1$
pavankumar_dss
786
views
answered
Jan 29, 2024
Calculus
gate2008-ec
calculus
+
–
0
0 votes
1
1 answer
1.0k
1.0k views
GATE ECE 2023 | Question: 45
The value of the integral $\iint_R \text{xy dx dy}$ over the region $R$, given in the figure, __________ is (rounded off to the nearest integer).
SankarVinayak
1.0k
views
answered
Jan 1, 2024
Calculus
gateece-2023
calculus
+
–
0
0 votes
0
0 answers
422
422 views
TIFR ECE 2023 | Question: 5
Let $\mathrm{B}$ denote the unit ball in $\mathbb{R}^{2}$, and $\mathrm{Q}$ a square of side length $2$. Let $\mathrm{K}$ be the set of all vectors $z$ such that for some...
admin
422
views
asked
Mar 14, 2023
Calculus
tifrece2023
geometry
calculus
+
–
0
0 votes
0
0 answers
532
532 views
TIFR ECE 2023 | Question: 10
Convolution between two functions $f(t)$ and $g(t)$ is defined as follows:$$f(t) * g(t)=\int_{-\infty}^{\infty} f(\tau) g(t-\tau) d \tau$$Let $u(t)$ be the unit-step func...
admin
532
views
asked
Mar 14, 2023
Calculus
tifrece2023
engineering-mathematics
calculus
+
–
0
0 votes
0
0 answers
650
650 views
TIFR ECE 2023 | Question: 15
Let $\left\{x_{n}\right\}_{n \geq 0}$ be a sequence of real numbers which satisfy$$x_{n+1}\left(1+x_{n+1}\right) \leq x_{n}\left(1+x_{n}\right), \quad n \geq 0 .$$Choose ...
admin
650
views
asked
Mar 14, 2023
Calculus
tifrece2023
sequences-series
calculus
+
–
1
1 vote
0
0 answers
354
354 views
TIFR ECE 2015 | Question: 2
Let $x[n]=a^{\lfloor n \mid}$, ( $a$ is real, $0<a<1$ ) and the discrete time Fourier transform $\text{(DTFT)}$ of $x[n]$ is given by $X(\omega)=\sum_{n=-\infty}^{\infty}...
admin
354
views
asked
Dec 15, 2022
Calculus
tifr2015
calculus
discrete-fourier-transform
+
–
1
1 vote
0
0 answers
322
322 views
TIFR ECE 2014 | Question: 2
Evaluate the limit\[\lim _{n \rightarrow \infty}\left(2 n^{4}\right)^{\frac{1}{3 n}} .\]$e$$1$$2^{\frac{1}{3}}$$0$None of the above
admin
322
views
asked
Dec 14, 2022
Calculus
tifr2014
calculus
limits
+
–
1
1 vote
0
0 answers
456
456 views
TIFR ECE 2014 | Question: 6
Let $g:[0, \pi] \rightarrow \mathbb{R}$ be continuous and satisfy\[\int_{0}^{\pi} g(x) \sin (n x) d x=0\]for all integers $n \geq 2$. Then which of the following can you ...
admin
456
views
asked
Dec 14, 2022
Calculus
tifr2014
calculus
definite-integrals
+
–
1
1 vote
0
0 answers
316
316 views
TIFR ECE 2014 | Question: 8
Consider a square pulse $g(t)$ of height $1$ and width $1$ centred at $1 / 2$. Define $f_{n}(t)=\frac{1}{n}\left(g(t) *^{n} g(t)\right),$ where $*^{n}$ stands for $n$-fol...
admin
316
views
asked
Dec 14, 2022
Calculus
tifr2014
calculus
limits
+
–
1
1 vote
0
0 answers
293
293 views
TIFR ECE 2014 | Question: 13
Let function $f: \mathbf{R} \rightarrow \mathbf{R}$ be convex, i.e., for $x, y \in \mathbf{R}, \alpha \in[0,1], f(\alpha x+(1-\alpha) y) \leq$ $\alpha f(x)+(1-\alpha) f(y...
admin
293
views
asked
Dec 14, 2022
Calculus
tifr2014
calculus
functions
+
–
1
1 vote
0
0 answers
333
333 views
TIFR ECE 2014 | Question: 20
What is\[\lim _{n \rightarrow \infty} \cos \frac{\pi}{2^{2}} \cos \frac{\pi}{2^{3}} \cdots \cos \frac{\pi}{2^{n}} ?\]$0$$\pi / 2$$1 / \sqrt{2}$$2 / \pi$None of the above.
admin
333
views
asked
Dec 14, 2022
Calculus
tifr2014
calculus
limits
+
–
1
1 vote
0
0 answers
333
333 views
TIFR ECE 2013 | Question: 19
Which of the following is true for polynomials defined over real numbers $\mathbb{R}$.Every odd degree polynomial has a real root.Every odd degree polynomial has at least...
admin
333
views
asked
Dec 12, 2022
Calculus
tifr2013
calculus
polynomials
+
–
1
1 vote
0
0 answers
292
292 views
TIFR ECE 2013 | Question: 20
A function $f: \mathbb{R} \rightarrow \mathbb{R}$ is convex if for $x, y \in \mathbb{R}, \alpha \in[0,1], f(\alpha x+(1-\alpha) y) \leq \alpha f(x)+(1-\alpha) f(y)$.Which...
admin
292
views
asked
Dec 12, 2022
Calculus
tifr2013
calculus
functions
+
–
1
1 vote
0
0 answers
364
364 views
TIFR ECE 2012 | Question: 1
The minimum value of $f(x)=\ln \left(1+\exp \left(x^{2}-3 x+2\right)\right)$ for $x \geq 0$, where $\ln (\cdot)$ denotes the natural logarithm, is$\ln \left(1+e^{-1 / 4}\...
admin
364
views
asked
Dec 8, 2022
Calculus
tifr2012
calculus
maxima-minima
+
–
1
1 vote
0
0 answers
339
339 views
TIFR ECE 2012 | Question: 2
Let $\alpha_{1}, \alpha_{2}, \cdots, \alpha_{k}$ be complex numbers. Then\[\lim _{n \rightarrow \infty}\left|\sum_{i=1}^{k} \alpha_{i}^{n}\right|^{1 / n}\]is$0$$\infty$$\...
admin
339
views
asked
Dec 8, 2022
Calculus
tifr2012
calculus
limits
+
–
1
1 vote
0
0 answers
351
351 views
TIFR ECE 2012 | Question: 3
A sequence of numbers $\left(x_{n}: n=1,2,3, \ldots\right)$ is said to have a limit $x$, if given any number $\epsilon>0$, there exists an integer $n_{\epsilon}$ such tha...
admin
351
views
asked
Dec 8, 2022
Calculus
tifr2012
calculus
sequences-series
+
–
1
1 vote
0
0 answers
286
286 views
TIFR ECE 2011 | Question: 4
Let $\lim _{n \rightarrow \infty} x_{n}=x$. Then which of the following is $\text{TRUE.}$There exists an $n_{0}$, such that for all $n>n_{0},\left|x_{n}-x\right|=0$.There...
admin
286
views
asked
Dec 5, 2022
Calculus
tifr2011
calculus
limits
+
–
1
1 vote
0
0 answers
289
289 views
TIFR ECE 2011 | Question: 8
Let $f(x, y)$ be a function in two variables $x, y$. Then which of the following is true$\max _{x} \min _{y} f(x, y) \leq \min _{y} \max _{x} f(x, y)$.$\max _{x} \min _{y...
admin
289
views
asked
Dec 5, 2022
Calculus
tifr2011
calculus
maxima-minima
+
–
1
1 vote
0
0 answers
569
569 views
TIFR ECE 2011 | Question: 10
Let $f(x)=|x|$, for $x \in(-\infty, \infty)$. Then$f(x)$ is not continuous but differentiable.$f(x)$ is continuous and differentiable.$f(x)$ is continuous but not differe...
admin
569
views
asked
Dec 5, 2022
Calculus
tifr2011
calculus
continuity-and-differentiability
+
–
1
1 vote
0
0 answers
480
480 views
TIFR ECE 2011 | Question: 13
If $a_k$ is an increasing function of $k$, i.e. $a_1<a_2<\ldots<a_k \ldots$. Then which of the following is $\text{TRUE.}$$\lim _{n \rightarrow \infty} \sum_{k=1}^{n} \fr...
admin
480
views
asked
Dec 5, 2022
Calculus
tifr2011
calculus
limits
+
–
1
1 vote
0
0 answers
306
306 views
TIFR ECE 2010 | Question: 2
For $x \in[0, \pi / 2], \alpha$ for which $\sin (x) \geq x-\alpha x^{3}$ is$\alpha>1 /(2 \pi)$$\alpha \geq 1 / 6$$\alpha \leq 1 /(2 \pi)$$\alpha=1 / 4$None of the above
admin
306
views
asked
Nov 30, 2022
Calculus
tifr2010
calculus
maxima-minima
+
–
1
1 vote
0
0 answers
292
292 views
TIFR ECE 2010 | Question: 17
Let $a_{1} \geq a_{2} \geq \cdots \geq a_{k} \geq 0$. Then the limit\[\lim _{n \rightarrow \infty}\left(\sum_{i=1}^{k} a_{i}^{n}\right)^{1 / n}\]is$0$$\infty$$a_{k}$$a_{1...
admin
292
views
asked
Nov 30, 2022
Calculus
tifr2010
calculus
limits
+
–
1
1 vote
0
0 answers
423
423 views
TIFR ECE 2010 | Question: 20
The function $f(t)$ is a convolution of $t^{2}$ with $\exp \left(-t^{2} / 2\right) / \sqrt{2 \pi}$. Its derivative is$2 t$$t^{2}$$2 t+t e^{-t^{2} / 2}$Does not have a sim...
admin
423
views
asked
Nov 30, 2022
Calculus
tifr2010
calculus
derivatives
+
–
1
1 vote
0
0 answers
307
307 views
TIFR ECE 2022 | Question: 4
Evaluate the value of\[\max \left(x^{2}+(1-y)^{2}\right),\]where the maximisation above is over $x$ and $y$ such that $0 \leq x \leq y \leq 1$.$0$$2$$1 / 2$$1 / 4$$1$
admin
307
views
asked
Nov 30, 2022
Calculus
tifrece2022
calculus
maxima-minima
+
–
1
1 vote
0
0 answers
318
318 views
TIFR ECE 2022 | Question: 6
Consider a degree-$5$ polynomial function $f:(-\infty, \infty) \rightarrow(-\infty, \infty)$. If $f$ exhibits at least four local maxima, which of the following is necess...
admin
318
views
asked
Nov 30, 2022
Calculus
tifrece2022
calculus
maxima-minima
+
–
1
1 vote
0
0 answers
364
364 views
TIFR ECE 2022 | Question: 13
Calculate the minimum value attained by the function\[\sin (\pi x)-\sqrt{2} \pi x^{2}\]for values of $x$ which lie in the interval $[0,1]$.$\frac{1}{\sqrt{2}}\left(1-\fra...
admin
364
views
asked
Nov 30, 2022
Calculus
tifrece2022
calculus
maxima-minima
+
–
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