1
WB JEE 2026
MCQ (Single Correct Answer)
+1
-0.25
Change Language

If $\int \frac{\operatorname{cosec}^2 x-2010}{\cos ^{2010} x} d x=-\frac{f(x)}{(g(x))^{2010}}+c$, where $f\left(\frac{\pi}{4}\right)=1$; then the number of solutions of the equation $\frac{f(x)}{g(x)}=\{x\}$ in $[0,2 \pi]$ is/are (where $\{\cdot\}$ represents fractional part function)

A

3

B

1

C

0

D

2

2
WB JEE 2026
MCQ (Single Correct Answer)
+1
-0.25
Change Language

$$ \int \frac{\left(\sqrt[3]{x+\sqrt{2-x^2}}\right)\left(\sqrt[6]{1-x \sqrt{2-x^2}}\right)}{\sqrt[3]{1-x^2}} d x ;(x \in(0,1))= $$

A

$2^{\frac{1}{12}} x+c$

B

$2^{\frac{3}{4}} x+c$

C

$2^{\frac{1}{3}} x+c$

D

$2^{\frac{1}{6}} x+c$

3
WB JEE 2026
MCQ (Single Correct Answer)
+1
-0.25
Change Language

If $\int \frac{\left(1-x^2\right)}{\sqrt{x} \sqrt{\left(1+x^2\right)^3}}=\alpha \frac{x^\beta}{\left(1+x^2\right)^\gamma}+C ; \alpha, \beta, \gamma \in \mathbb{R}$ and $C$ is constant of integration, then $\alpha: \beta: \gamma$ will be

A

$4: 1: 1$

B

$2: 2: \frac{1}{2}$

C

$\frac{1}{6}: 2: \frac{1}{2}$

D

$1: 2: \frac{1}{2}$

4
WB JEE 2024
MCQ (Single Correct Answer)
+1
-0.25
Change Language

$$ \text { If } \int \frac{\log _e\left(x+\sqrt{1+x^2}\right)}{\sqrt{1+x^2}} \mathrm{~d} x=\mathrm{f}(\mathrm{g}(x))+\mathrm{c} \text { then } $$

A
$$\mathrm{f}(x)=\frac{x^2}{2}, \mathrm{~g}(x)=\log _{\mathrm{e}}\left(x+\sqrt{1+x^2}\right)$$
B
$$\mathrm{f}(x)=\log _{\mathrm{e}}\left(x+\sqrt{1+x^2}\right), \mathrm{g}(x)=\frac{x^2}{2}$$
C
$$\mathrm{f}(x)=x^2, \mathrm{~g}(x)=\log _{\mathrm{e}}\left(x+\sqrt{1+x^2}\right)$$
D
$$\mathrm{f}(x)=\log _{\mathrm{e}}\left(x-\sqrt{1+x^2}\right), \mathrm{g}(x)=x^2$$

WB JEE Subjects

Browse all chapters by subject