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Recent questions tagged definite-integral

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NIELIT 2017 OCT Scientific Assistant A (CS) - Section B: 19
The value of the Integral $I = \displaystyle{}\int_{0}^{\pi/2} x^{2}\sin x dx$ is $(x+2)/2$ $2/(\pi-2)$ $\pi – 2$ $\pi + 2$

Lakshman Patel RJIT asked in Calculus Apr 1, 2020

by Lakshman Patel RJIT

271 views

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2

NIELIT 2016 MAR Scientist B - Section B: 9
The value of improper integral $\displaystyle\int_{0}^{1} x\ln x =?$ $1/4$ $0$ $-1/4$ $1$

Lakshman Patel RJIT asked in Calculus Mar 31, 2020

by Lakshman Patel RJIT

388 views

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2 answers

3

NIELIT 2016 MAR Scientist B - Section B: 11
What is the derivative w.r.t $x$ of the function given by $\large \Phi(x)= \displaystyle \int_{0}^{x^2}\sqrt t\:dt$, $2x^2$ $\sqrt x$ $0$ $1$

Lakshman Patel RJIT asked in Calculus Mar 31, 2020

by Lakshman Patel RJIT

351 views

2 votes

1 answer

4

ISI2014-DCG-12
The integral $\int _0^{\frac{\pi}{2}} \frac{\sin^{50} x}{\sin^{50}x +\cos^{50}x} dx$ equals $\frac{3 \pi}{4}$ $\frac{\pi}{3}$ $\frac{\pi}{4}$ none of these

Arjun asked in Calculus Sep 23, 2019

by Arjun

499 views

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1 answer

5

ISI2014-DCG-20
If $A(t)$ is the area of the region bounded by the curve $y=e^{-\mid x \mid}$ and the portion of the $x$-axis between $-t$ and $t$, then $\underset{t \to \infty}{\lim} A(t)$ equals $0$ $1$ $2$ $4$

Arjun asked in Geometry Sep 23, 2019

by Arjun

228 views

3 votes

1 answer

6

ISI2014-DCG-31
For real $\alpha$, the value of $\int_{\alpha}^{\alpha+1} [x]dx$, where $[x]$ denotes the largest integer less than or equal to $x$, is $\alpha$ $[\alpha]$ $1$ $\dfrac{[\alpha] + [\alpha +1]}{2}$

Arjun asked in Calculus Sep 23, 2019

by Arjun

328 views

1 vote

1 answer

7

ISI2014-DCG-47
The value of the definite integral $\int_0^{\pi} \mid \frac{1}{2} + \cos x \mid dx$ is $\frac{\pi}{6} + \sqrt{3}$ $\frac{\pi}{6} - \sqrt{3}$ $0$ $\frac{1}{2}$

Arjun asked in Calculus Sep 23, 2019

by Arjun

311 views

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1 answer

8

ISI2014-DCG-53
The value of the integral $\displaystyle{}\int_{-1}^1 \dfrac{x^2}{1+x^2} \sin x \sin 3x \sin 5x dx$ is $0$ $\frac{1}{2}$ $ – \frac{1}{2}$ $1$

Arjun asked in Calculus Sep 23, 2019

by Arjun

388 views

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9

ISI2015-MMA-69
Consider the function $f(x) = \begin{cases} \int_0^x \{5+ \mid 1-y \mid \} dy & \text{ if } x>2 \\ 5x+2 & \text{ if } x \leq 2 \end{cases}$ Then $f$ is not continuous at $x=2$ $f$ is continuous and differentiable everywhere $f$ is continuous everywhere but not differentiable at $x=1$ $f$ is continuous everywhere but not differentiable at $x=2$

Arjun asked in Calculus Sep 23, 2019

by Arjun

512 views

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10

ISI2015-MMA-76
Given that $\int_{-\infty}^{\infty} e^{-x^2} dx = \sqrt{\pi}$, the value of $ \int_{-\infty}^{\infty} \int_{-\infty}^{\infty} e^{-(x^2+xy+y^2)} dxdy$ is $\sqrt{\pi/3}$ $\pi/\sqrt{3}$ $\sqrt{2 \pi/3}$ $2 \pi / \sqrt{3}$

Arjun asked in Calculus Sep 23, 2019

by Arjun

326 views

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2 answers

11

ISI2015-MMA-78
The value of $\displaystyle \lim_{n \to \infty} \left[ (n+1) \int_0^1 x^n \ln(1+x) dx \right]$ is $0$ $\ln 2$ $\ln 3$ $\infty$

Arjun asked in Calculus Sep 23, 2019

by Arjun

368 views

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0 answers

12

ISI2015-MMA-80
Let $0 < \alpha < \beta < 1$. Then $ \Sigma_{k=1}^{\infty} \int_{1/(k+\beta)}^{1/(k+\alpha)} \frac{1}{1+x} dx$ is equal to $\log_e \frac{\beta}{\alpha}$ $\log_e \frac{1+ \beta}{1 + \alpha}$ $\log_e \frac{1+\alpha }{1+ \beta}$ $\infty$

Arjun asked in Calculus Sep 23, 2019

by Arjun

309 views

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13

ISI2015-MMA-81
If $f$ is continuous in $[0,1]$ then $\displaystyle \lim_ {n \to \infty} \sum_{j=0}^{[n/2]} \frac{1}{n} f \left(\frac{j}{n} \right)$ (where $[y]$ is the largest integer less than or equal to $y$) does not exist exists and is equal to $\frac{1}{2} \int_0^1 f(x) dx$ exists and is equal to $ \int_0^1 f(x) dx$ exists and is equal to $\int_0^{1/2} f(x) dx$

Arjun asked in Calculus Sep 23, 2019

by Arjun

219 views

1 vote

1 answer

14

ISI2015-DCG-51
The area bounded by $y=x^2-4$, $y=0$ and $x=4$ is $\frac{64}{3}$ $6$ $\frac{16}{3}$ $\frac{32}{3}$

gatecse asked in Calculus Sep 18, 2019

225 views

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1 answer

15

ISI2017-DCG-25
If $f(x) = \begin{vmatrix} 2 \cos ^2 x & \sin 2x & – \sin x \\ \sin 2x & 2 \sin ^2 x & \cos x \\ \sin x & – \cos x & 0 \end{vmatrix},$ then $\int_0^{\frac{\pi}{2}} [ f(x) + f’(x)] dx$ is $\pi$ $\frac{\pi}{2}$ $0$ $1$

gatecse asked in Linear Algebra Sep 18, 2019

300 views

7 votes

2 answers

16

TIFR CSE 2019 | Part A | Question: 13
Consider the integral $\int^{1}_{0} \frac{x^{300}}{1+x^2+x^3} dx$ What is the value of this integral correct up to two decimal places? $0.00$ $0.02$ $0.10$ $0.33$ $1.00$

Arjun asked in Calculus Dec 18, 2018

by Arjun

1.9k views

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1 answer

17

Gilbert Strang
$\int \frac{x^3}{\sqrt{1+x^2}}.dx$

aditi19 asked in Calculus Oct 24, 2018

324 views

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0 answers

18

ISI2016-MMA-23
Given that $\int_{-\infty}^{\infty} e^{-x^2/2} dx = \sqrt{2 \pi}$, what is the value of $\int_{- \infty}^{\infty} \mid x \mid ^{-1/2} e^{- \mid x \mid} dx$? $0$ $\sqrt{\pi}$ $2 \sqrt{\pi}$ $\infty$

go_editor asked in Calculus Sep 13, 2018

171 views

1 vote

0 answers

19

Virtual Gate Test Series: Calculus - Definite Integration
$\int \limits_0^1 (1 + y^2)^{-1.5} dy=?$

Utsav09 asked in Calculus Jan 31, 2018

293 views

2 votes

3 answers

20

integration
$\int_{-4}^{4}|3-x|dx$ a) 13 b)8 c)25 d)24

Parshu gate asked in Calculus Nov 11, 2017

485 views

3 votes

1 answer

21

integration question
$f(x) = \int_{- \infty}^{\infty} f(x) e^{2\pi x} dx$ solve f(x)

Pavan Kumar Munnam asked in Calculus Oct 11, 2017

by Pavan Kumar Munnam

2.0k views

3 votes

1 answer

22

ISRO2016- EC Calculus
.

sh!va asked in Calculus Feb 22, 2017

by sh!va

262 views

0 votes

0 answers

23

Integration
$\int_{-\infty}^{\infty} e^{-x^2}\, dx = \sqrt{\pi}$

Kitty35 asked in Calculus Jun 30, 2016

142 views

5 votes

0 answers

24

TIFR CSE 2015 | Part A | Question: 10
Let $f(x), x\in \left[0, 1\right]$, be any positive real valued continuous function. Then $\displaystyle \lim_{n \rightarrow \infty} (n + 1) \int_{0}^{1} x^{n} f(x) \text{d}x$ equals. $\max_{x \in \left[0, 1\right]} f(x)$ $\min_{x \in \left[0, 1\right]} f(x)$ $f(0)$ $f(1)$ $\infty$

makhdoom ghaya asked in Calculus Dec 5, 2015

by makhdoom ghaya

494 views

10 votes

3 answers

25

TIFR CSE 2011 | Part A | Question: 11
$\int_{0}^{1} \log_e(x) dx=$ $1$ $-1$ $\infty $ $-\infty $ None of the above

makhdoom ghaya asked in Calculus Oct 19, 2015

by makhdoom ghaya

1.7k views

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