यदि $y = \log(\cosh x)$ है,तो $\frac{d^2 y}{d x^2} = $

  • A
    $\operatorname{sech}^2 x$
  • B
    $-\operatorname{sech}^2 x$
  • C
    $\sinh x$
  • D
    $-\sinh x$

Explore More

Similar Questions

फलन $f(x) = x \cdot \cos x$ का द्वितीय कोटि का अवकलज ज्ञात कीजिए।

यदि $y=a \sin x+(5+2 x) \cos x$ है,तो $y^{\prime \prime}+y=$

यदि $x=\sin \theta$ और $y=\sin(k \theta)$ है,तो $(1-x^2) y_2-x y_1-\alpha y=0$ के लिए $\alpha=$

माना $y = \log_8 \left( \frac{1-x^2}{1+x^2} \right)$ जहाँ $-1 < x < 1$ है। तो $x = \frac{1}{2}$ पर,$225(y' - y'')$ का मान क्या होगा?

$y=\sin ^{-1}\left\{\frac{5 x+12 \sqrt{1-x^{2}}}{13}\right\} ;|x| \leq 1$ के लिए,यदि $a\left(1-x^{2}\right) y_{2}+b x y_{1}=0$ है तो $(a, b)=$

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