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321.
The integral $\int \sec^{\frac{2}{3}} (x) \csc^{\frac{4}{3}} (x) dx$ is equal to

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

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

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

$- \frac{3}{4} \tan^{\frac{- 4}{3}} (x) + C$

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

$\int \sec^{\frac{2}{3}} (x) \csc^{\frac{4}{3}} (x) dx Put \int \frac{1}{\cos^{\frac{2}{3}} (x) {(\sin^{\frac{2}{3}} (x))}^{2}} dx = \int \frac{1}{\cos^{\frac{2}{3}} (x) {(\tan^{\frac{2}{3}} (x))}^{2} \cos^{\frac{4}{3}} (x)} Put \tan (x) = t = \int \frac{dt}{t^{\frac{4}{3}}} = t^{\frac{- 1}{3}} . (- 3) + c = - 3 {(\tan (x))}^{\frac{- 1}{3}} + C = - 3 \tan^{\frac{- 1}{3}} (x) + C$

322.

If $\int \frac{dx}{{(x^{2} - 2 x + 10)}^{2}} = A (\tan^{- 1} (\frac{x - 1}{3}) + \frac{f (x)}{x^{2} - 2 x + 10}) + C$ where C is a constant of integration, then

$A = \frac{1}{54}, f (x) = 3 (x - 1)$
$A = \frac{1}{54}, f (x) = 9 {(x - 1)}^{2}$
$A = \frac{1}{27}, f (x) = 9 (x - 1)$
$A = \frac{1}{81}, f (x) = 3 (x - 1)$

323.

The value of $\int_{0}^{2 π} [\sin (2 x) (1 + \cos (3 x))] dx$ , (where [t] denotes Greatest Integer Function)

$- 2 π$
$π$
$2 π$
$- π$

324.

If $\int x^{5} e^{- x^{2}} dx = g (x) e^{- 2} + c$ , where c is a constant of interation then g(- 1) is equal to :

- 1
1
$\frac{1}{2}$
$- \frac{5}{2}$

325.

The integral $\int_{\frac{π}{6}}^{\frac{π}{3}} \sec^{\frac{2}{3}} (\csc^{\frac{4}{3}} (x)) dx$ =

3^5/3 - 3^1/3
3^7/6 - 3^5/6
3^5/6 - 3^1/3
3^4/3 - 3^1/3

326.

Primitive of cos^-1(x) w.r.t. x is

${xcos}^{- 1} (x) - \frac{1}{2} \sqrt{1 - x^{2}} + c$
${xcos}^{- 1} (x) - \sqrt{1 - x^{2}} + c$
${xcos}^{- 1} (x) + \sqrt{1 - x^{2}} + c$
${xcos}^{- 1} (x) + \frac{1}{2} \sqrt{1 - x^{2}} + c$

327.

If y = log(cot(x)), then $\int_{0}^{\frac{π}{2}} ydx$ is equal to

1
0
$\frac{π}{2}$
$\frac{π}{4}$

328.

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

$\sin (x) - \cos (x) + c$
$\tan (x) + \cot (x) + c$
$\cos (x) + \sin (x) + c$
$\tan (x) - \cot (x) + c$

329.

Primitive of $\frac{1}{4 \sqrt{x} + x}$ is equal to

$2 \log |1 + 4 \sqrt{x}| + c$
$\frac{1}{2} \log |4 - \sqrt{x}| + c$
$2 \log |4 + \sqrt{x}| + c$
$\frac{1}{2} \log |4 + \sqrt{x}| + c$

330.

$\int e^{x} (\log (x) + \frac{1}{x}) dx$ is equal to

$e^{x} \log (x) + c$
$\frac{e^{x}}{\log (x)} + c$
$\frac{\log (x)}{x} + c$
$\frac{e^{x}}{x} + c$

Previous Year Papers

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321.
The integral $\int \sec^{\frac{2}{3}} (x) \csc^{\frac{4}{3}} (x) dx$ is equal to

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

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

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

$- \frac{3}{4} \tan^{\frac{- 4}{3}} (x) + C$

Previous Year Papers

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Multiple Choice Questions

321. The integral ∫sec23xcsc43xdx is equal to - 3 cot-13x + C - 3 tan-13x + C 3 tan-13x + C - 34 tan-43x + C

321.
The integral $\int \sec^{\frac{2}{3}} (x) \csc^{\frac{4}{3}} (x) dx$ is equal to

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

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

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

$- \frac{3}{4} \tan^{\frac{- 4}{3}} (x) + C$