frac{x - 1}{x + 1} + frac{1}{2} cdot frac{x^2 | vedclass

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Question

(A) माना $S = \sum_{n=1}^{\infty} \frac{1}{n} \left( \frac{x^n - 1}{(x + 1)^n} \right) = \sum_{n=1}^{\infty} \frac{1}{n} \left( \left( \frac{x}{x + 1}

Vedclass · Accepted Answer

$\log_e x$

Vedclass · Answer

(A) माना $S = \sum_{n=1}^{\infty} \frac{1}{n} \left( \frac{x^n - 1}{(x + 1)^n} \right) = \sum_{n=1}^{\infty} \frac{1}{n} \left( \left( \frac{x}{x + 1} \right)^n - \left( \frac{1}{x + 1} \right)^n \right)$.लघुगणकीय श्रेणी विस्तार $\ln(1 - y) = - \sum_{n=1}^{\infty} \frac{y^n}{n}$ का उपयोग करते हुए:$S = - \ln\left(1 - \frac{x}{x + 1}\right) - \left( - \ln\left(1 - \frac{1}{x + 1}\right) \right)$.$S = - \ln\left(\frac{1}{x + 1}\right) + \ln\left(\frac{x}{x + 1}\right)$.$S = \ln(x + 1) + \ln\left(\frac{x}{x + 1}\right) = \ln\left((x + 1) \cdot \frac{x}{x + 1}\right) = \ln x$.

$\frac{x - 1}{x + 1} + \frac{1}{2} \cdot \frac{x^2 - 1}{(x + 1)^2} + \frac{1}{3} \cdot \frac{x^3 - 1}{(x + 1)^3} + \dots \infty = $

Similar Questions

$\frac{1}{2 \cdot 3} + \frac{1}{4 \cdot 5} + \frac{1}{6 \cdot 7} + \frac{1}{8 \cdot 9} + \dots$ का मान ज्ञात कीजिए।

यदि $S = \sum\limits_{n = 0}^\infty \frac{(\log x)^{2n}}{(2n)!}$ है,तो $S$ =

यदि $S = \frac{1}{1 \times 2} - \frac{1}{2 \times 3} + \frac{1}{3 \times 4} - \frac{1}{4 \times 5} + \dots + \infty$ है,तो $e^S = $

श्रेणी $\frac{1}{2 \times 3} + \frac{1}{4 \times 5} + \frac{1}{6 \times 7} + \dots = $ का योग ज्ञात कीजिए।

श्रेणी $x \log _e a + \frac{x^3}{3!} (\log _e a)^3 + \frac{x^5}{5!} (\log _e a)^5 + \dots$ का मान क्या है?

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