यदि $\tan ^{-1}\left[\frac{1}{1+1 \cdot 2}\right]+\tan ^{-1}\left[\frac{1}{1+2 \cdot 3}\right]+\cdots+\tan ^{-1}\left[\frac{1}{1+n(n+1)}\right]=\tan ^{-1}[x]$ है,तो $x=$

  • A
    $\frac{1}{n+1}$
  • B
    $\frac{n}{n+1}$
  • C
    $\frac{1}{n+2}$
  • D
    $\frac{n}{n+2}$

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Similar Questions

कथन $(A): \operatorname{cosech}^{-1}(3) = \log \left(\frac{1+\sqrt{10}}{3}\right)$
कारण $(R): e^{\operatorname{cosech}^{-1} x}$ द्विघात समीकरण $x p^2 - 2p - x = 0$ का एक मूल है।
निम्नलिखित में से सही विकल्प चुनें।

यदि $\sin \left(\sin ^{-1} \frac{1}{5}+\cos ^{-1} x\right)=1$ है,तो $x$ का मान ज्ञात कीजिए।

मान ज्ञात कीजिए: $\cot ^{ - 1}\left(\frac{xy + 1}{x - y}\right) + \cot ^{ - 1}\left(\frac{yz + 1}{y - z}\right) + \cot ^{ - 1}\left(\frac{zx + 1}{z - x}\right)$

यदि $\sin ^{-1} x < \cos ^{-1} x$ है, तो

$\cos \left(\cos ^{-1} \frac{1}{3}+\cos ^{-1} \frac{1}{5}\right)+\cos \left(\sin ^{-1} \frac{1}{3}+\sin ^{-1} \frac{1}{5}\right) =$ . . . . . . .

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