અનંત શ્રેણી $\cot ^{-1}\left(\frac{7}{4}\right)+\cot ^{-1}\left(\frac{19}{4}\right)+\cot ^{-1}\left(\frac{39}{4}\right)+\cot ^{-1}\left(\frac{67}{4}\right)+\ldots \ldots$ નો સરવાળો :-

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

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Similar Questions

શ્રેણી $\frac{3}{{1! + 2! + 3!}} + \frac{4}{{2! + 3! + 4!}} + \frac{5}{{3! + 4! + 5!}} + ...... + \frac{{2008}}{{\left( {2006} \right)! + \left( {2007} \right)! + \left( {2008} \right)!}}$ નો સરવાળો કેટલો થાય?

$\frac{1}{1 \times 2} + \frac{1}{2 \times 3} + \frac{1}{3 \times 4} + \dots + \frac{1}{n(n + 1)} = \dots$

પદાવલિ $\frac{2^2+1}{2^2-1}+\frac{3^2+1}{3^2-1}+\frac{4^2+1}{4^2-1}+\ldots+\frac{(2011)^2+1}{(2011)^2-1}$ કયા અંતરાલમાં આવેલી છે?

$\mathop {\lim }\limits_{n \to \infty } \left( \frac{1}{1 \cdot 3} + \frac{1}{3 \cdot 5} + \frac{1}{5 \cdot 7} + \dots + \frac{1}{(2n - 1)(2n + 1)} \right)$ ની કિંમત શોધો.

જો $\frac{1}{2 \times 4} + \frac{1}{4 \times 6} + \frac{1}{6 \times 8} + \dots (n \text{ પદો}) = \frac{k n}{4(n + 1)}$ હોય,તો $k$ ની કિંમત શોધો.

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