यदि $y = \tan^{-1} \left( \frac{4x}{1 + 5x^2} \right) + \tan^{-1} \left( \frac{2 + 3x}{3 - 2x} \right)$ है,तो $\frac{dy}{dx} = $

  • A
    $\frac{1}{1 + 25x^2} + \frac{2}{1 + x^2}$
  • B
    $\frac{5}{1 + 25x^2} + \frac{2}{1 + x^2}$
  • C
    $\frac{5}{1 + 25x^2}$
  • D
    $\frac{1}{1 + 25x^2}$

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यदि $\log_{\pi}x > 0$,तो $\log_{\pi}\left( \sin^{-1}\frac{2x}{1+x^2} + 2\tan^{-1}x \right)$ का मान किसके बराबर है?

$2 \tan ^{-1}\left(\frac{1}{3}\right)+\tan ^{-1}\left(\frac{1}{7}\right)$ का मान ज्ञात कीजिए।

$x$ का वह मान,जिसके लिए $\sin \left(\cot ^{-1}(x)\right)=\cos \left(\tan ^{-1}(1+x)\right)$ है,है

यदि $S = \{x \in R : \sin^{-1}\left(\frac{x+1}{\sqrt{x^2+2x+2}}\right) - \sin^{-1}\left(\frac{x}{\sqrt{x^2+1}}\right) = \frac{\pi}{4}\}$,तो $\sum_{x \in S} \left(\sin\left((x^2+x+5)\frac{\pi}{2}\right) - \cos((x^2+x+5)\pi)\right)$ का मान $........$ है।

$\tan^{-1} \frac{1}{2} + \tan^{-1} \frac{1}{3} = ?$

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