$\sum_{n=1}^{\infty} \frac{2n}{(2n+1)!}$ का मान ज्ञात कीजिए।

  • A
    $1/e$
  • B
    $e/2$
  • C
    $e$
  • D
    $2e$

Explore More

Similar Questions

$1 + \frac{1}{3!} + \frac{1}{5!} + \frac{1}{7!} + \dots \infty = $

$1 + \frac{2^3}{2!} + \frac{3^3}{3!} + \frac{4^3}{4!} + \dots \infty =$ ($e$ में)

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

$\frac{1}{2!} + \frac{1+2}{3!} + \frac{1+2+3}{4!} + \ldots$ का मान ज्ञात कीजिए :

यदि $2 \sinh x = \cosh x$ है,तो $x =$

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