શ્રેણીનો સરવાળો શોધો: $\tan^{-1} \left( \frac{1}{1 + 1 \times 2} \right) + \tan^{-1} \left( \frac{1}{1 + 2 \times 3} \right) + \dots + \tan^{-1} \left( \frac{1}{1 + n(n + 1)} \right) =$

  • A
    $\tan^{-1} \left( \frac{n}{n + 2} \right)$
  • B
    $\tan^{-1} \left( \frac{n + 1}{n} \right)$
  • C
    $\tan^{-1} \left( \frac{n}{n + 1} \right)$
  • D
    $\tan^{-1} \left( \frac{n + 2}{n} \right)$

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Similar Questions

$|x| \geq 1$ માટે $\cos \left(\sec ^{-1} x+\csc ^{-1} x\right)$ ની કિંમત શોધો.

$\frac{d}{dx} \left[ \tan^{-1} \left( \frac{a - x}{1 + ax} \right) \right] = $

સાબિત કરો કે $\tan ^{-1} \frac{1}{2}+\tan ^{-1} \frac{2}{11}=\tan ^{-1} \frac{3}{4}$

જો $y = \sin^{-1}\left(\frac{19}{20}x\right) + \cos^{-1}\left(\frac{19}{20}x\right)$ હોય,તો $\frac{dy}{dx} = $

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

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