$\int \frac{\sec ^2 x}{\sin ^7 x} d x - \int \frac{7}{\sin ^7 x} d x =$

  • A
    $\frac{1}{\sin ^6 x \cos x} + c$
  • B
    $\frac{\tan x}{\sin ^8 x} + c$
  • C
    $\sin ^8 x \cos x + c$
  • D
    $\sec x \tan ^7 x + c$

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$\frac{e^{-\pi/4} + \int_0^{\pi/4} e^{-x} \tan^{50} x \, dx}{\int_0^{\pi/4} e^{-x} (\tan^{49} x + \tan^{51} x) \, dx}$ का मान है

$x \geq 0$ के लिए,$\int \sqrt{x^2+2x} \, dx$ का मान क्या है?

निम्नलिखित समाकल ज्ञात कीजिए:
$\int \frac{1}{1+\tan x} d x$

Difficult
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यदि $\int \frac{1}{\cot \frac{x}{2} \cot \frac{x}{3} \cot \frac{x}{6}} d x=A \log \left|\cos \frac{x}{2}\right|+B \log \left|\cos \frac{x}{3}\right|+C \log \left|\cos \frac{x}{6}\right|+k$ है,तो $A+B+C=$

किसी भी पूर्णांक $n \geq 2$ के लिए,मान लीजिए $I_n = \int \tan^n x \, dx$ है। यदि $n \geq 2$ के लिए $I_n = \frac{1}{a} \tan^{n-1} x - b I_{n-2}$ है,तो क्रमित युग्म $(a, b)$ बराबर है

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