$\tan ^2(\sec ^{-1} 4) + \cot ^2(\operatorname{cosec}^{-1} 3)$ का मान है

  • A
    $15$
  • B
    $25$
  • C
    $23$
  • D
    $7$

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यदि $a > b > 0$ और $\sec^{-1} \left( \frac{a+b}{a-b} \right) = 2 \sin^{-1} x$ है,तो $x$ का मान ज्ञात कीजिए।

$\sinh^{-1}\left(\frac{x}{\sqrt{1-x^2}}\right)$ किसके बराबर है?

यदि $y = \cos^{-1}(\cos x)$ है,तो $x = \frac{5\pi}{4}$ पर $\frac{dy}{dx}$ ज्ञात कीजिए।

यदि $y = \tan^{-1}\left(\frac{1}{x^2 + x + 1}\right) + \tan^{-1}\left(\frac{1}{x^2 + 3x + 3}\right) + \tan^{-1}\left(\frac{1}{x^2 + 5x + 7}\right) + \dots$ $n$ पदों तक है,तो $\frac{dy}{dx}$ का मान ज्ञात कीजिए।

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

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