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Integrals

Multiple Choice Questions

241.

$\int_{0}^{\frac{\sqrt{π}}{2}} 2 x^{3} \sin (x^{2}) dx$ is equal to

$\frac{1}{\sqrt{2}} (1 + \frac{π}{4})$
$\frac{1}{\sqrt{2}} (1 - \frac{π}{4})$
$\frac{1}{\sqrt{2}} (\frac{π}{2} - 1)$
$\frac{1}{\sqrt{2}} (1 - \frac{π}{2})$

242.

$\int {(\sec (x))}^{m} (\tan^{3} (x) + \tan (x)) dx$ is equal to

$\sec^{m + 2} (x) + C$
$\tan^{m + 2} (x) + C$
$\frac{\sec^{m + 2} (x)}{m + 2} + C$
$\frac{\tan^{m + 2} (x)}{m + 2} + C$

243.

$\int \frac{1}{7} \sin (\frac{x}{7} + 10) dx$ is equal to

$\frac{1}{7} \cos (\frac{x}{7} + 10) + C$
$- \frac{1}{7} \cos (\frac{x}{7} + 10) dx$
$- \cos (\frac{x}{7} + 10) + C$
$- 7 \cos (\frac{x}{7} + 10) + C$

244.

$\int (\frac{x - a}{x} - \frac{x}{x + a}) dx$ is equal to

$\log |\frac{x + a}{x}| + C$
$alog |\frac{x + a}{x}| + C$
$alog |\frac{x}{x + a}| + C$
$\log |\frac{x + a}{x}| + C$

245.
$\int x^{4} e^{x^{5}} \cos (e^{x^{5}}) dx$ is equal to

$\frac{1}{3} \sin (e^{x^{5}}) + C$

$\frac{1}{4} \sin (e^{x^{5}}) + C$

$\frac{1}{5} \sin (e^{x^{5}}) + C$

$\sin (e^{x^{5}}) + C$

$\frac{1}{5} \sin (e^{x^{5}}) + C$

$Let I = \int x^{5} e^{x^{5}} \cos (e^{x^{5}}) = \frac{1}{5} \int \cos (e^{x^{5}}) 5 x^{4} e^{x^{5}} dx = \frac{1}{5} \int \cos (e^{x^{5}}) d (e^{x^{5}}) [∵ d (e^{x^{5}}) = 5 x^{4} (e^{x^{5}}) dx] = \frac{1}{5} \sin (e^{x^{5}}) + C$

246.

$\int \frac{1}{\sin (x) \cos (x)} dx$ is equal to

$\log |\tan (x)| + C$
$\log |\sin (2 x)| + C$
$\log |\sec (x)| + C$
$\log |\cos (x)| + C$

247.

$\int \frac{2 x + \sin (2 x)}{1 + \cos (2 x)} dx$ is equal to

$x + \log (\tan (x)) + C$
$xlog |\tan (x)| + C$
$xtan (x) + C$
$x + \tan (x) + C$

248.

$\int \frac{1}{8 \sin^{2} (x) + 1} dx$ is equal to

$\sin^{- 1} (\tan (x)) + C$
$\frac{1}{3} \sin^{- 1} (\tan (x)) + C$
$\frac{1}{3} \tan^{- 1} (3 \tan (x)) + C$
$\tan^{- 1} (3 \tan (x)) + C$

249.

$\int_{0}^{\frac{π}{2}} \log (\frac{\cos (x)}{\sin (x)}) dx$ is equal to

$\frac{π}{2}$
$\frac{π}{4}$
$π$
0

250.

The value of $\int_{- 1}^{2} 4 x^{2} |x| d x$ is equal to

Previous Year Papers

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Test Yourself

Multiple Choice Questions

245. ∫x4ex5cosex5dx is equal to 13sinex5 + C 14sinex5 + C 15sinex5 + C sinex5 + C

245.
$\int x^{4} e^{x^{5}} \cos (e^{x^{5}}) dx$ is equal to

$\frac{1}{3} \sin (e^{x^{5}}) + C$

$\frac{1}{4} \sin (e^{x^{5}}) + C$

$\frac{1}{5} \sin (e^{x^{5}}) + C$

$\sin (e^{x^{5}}) + C$