यदि $|a| < 1$ और $b = \sum_{k=1}^{\infty} \frac{a^k}{k}$ है,तो $a$ का मान क्या होगा?

  • A
    $\sum_{k=1}^{\infty} \frac{(-1)^k b^k}{k}$
  • B
    $\sum_{k=1}^{\infty} \frac{(-1)^{k-1} b^k}{k!}$
  • C
    $\sum_{k=1}^{\infty} \frac{(-1)^k b^k}{(k-1)!}$
  • D
    $\sum_{k=1}^{\infty} \frac{(-1)^{k-1} b^k}{(k+1)!}$

Explore More

Similar Questions

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

$\frac{1}{2} + \frac{3}{2} \cdot \frac{1}{4} + \frac{5}{3} \cdot \frac{1}{8} + \frac{7}{4} \cdot \frac{1}{16} + \dots \infty = $

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

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

यदि $P = 1 + \frac{1}{2 \times 2} + \frac{1}{3 \times 2^{2}} + \dots$ और $Q = \frac{1}{1 \times 2} + \frac{1}{3 \times 4} + \frac{1}{5 \times 6} + \dots$ है,तो

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo