જો $y = \tan^{-1} \frac{x}{1+2x^2} + \tan^{-1} \frac{x}{1+6x^2} + \tan^{-1} \frac{x}{1+12x^2}$ હોય,તો $\left(\frac{dy}{dx}\right)_{x=\frac{1}{2}} = $

  • A
    $1$
  • B
    $-1$
  • C
    $0$
  • D
    $\frac{1}{2}$

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Similar Questions

$2 \cot ^{-1} \frac{1}{2} - \cot ^{-1} \frac{4}{3}$ ની કિંમત શોધો.

સાબિત કરો કે $\tan ^{-1} \frac{1}{5}+\tan ^{-1} \frac{1}{7}+\tan ^{-1} \frac{1}{3}+\tan ^{-1} \frac{1}{8}=\frac{\pi}{4}$

Difficult
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$\cos \left[ {{\tan }^{ - 1}}\frac{1}{3} + {{\tan }^{ - 1}}\frac{1}{2} \right] = $

$\sec ^2(\tan ^{-1} 2)+\operatorname{cosec}^2(\cot ^{-1} 3) = $ . . . . . . .

$\tan \left(\cos ^{-1}\left(\frac{4}{5}\right)+\tan ^{-1}\left(\frac{2}{3}\right)\right)$ ની કિંમત શોધો.

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