$\int \frac{f(x) g^{\prime}(x)-f^{\prime}(x) g(x)}{f(x) g(x)} \times [\log g(x)-\log f(x)] \, dx$ का मान ज्ञात कीजिए।

  • A
    $\log \left[\frac{g(x)}{f(x)}\right]+C$
  • B
    $\frac{1}{2}\left[\log \frac{g(x)}{f(x)}\right]^2+C$
  • C
    $\frac{g(x)}{f(x)} \log \left[\frac{g(x)}{f(x)}\right]+C$
  • D
    $\log \left[\frac{g(x)}{f(x)}\right]-\frac{g(x)}{f(x)}+C$

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$x \in \left(-\frac{\pi}{2}, \frac{\pi}{2}\right)$ के लिए,यदि $y(x) = \int \frac{\operatorname{cosec} x + \sin x}{\operatorname{cosec} x \sec x + \tan x \sin^2 x} \, dx$ और $\lim_{x \rightarrow (\frac{\pi}{2})^-} y(x) = 0$ है,तो $y\left(\frac{\pi}{4}\right)$ का मान ज्ञात कीजिए:

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