यदि $u = \tan^{-1}\left(\frac{x^3 + y^3}{x - y}\right)$ है,तो $x\frac{\partial u}{\partial x} + y\frac{\partial u}{\partial y} = $

  • A
    $\sin 2u$
  • B
    $\cos 2u$
  • C
    $\tan 2u$
  • D
    $\sec 2u$

Explore More

Similar Questions

$\begin{aligned} & f(x, y)=2(x-y)^2-x^4-y^4 \\ & \left|\left(f_{x x} f_{y y}-f_{x y}^2\right)\right|_{(0,0)} \end{aligned}$

यदि $u(x,y) = y \log x + x \log y$ है,तो ${u_x}{u_y} - {u_x} \log x - {u_y} \log y + \log x \log y = $

Difficult
View Solution

यदि $u = x^2 + y^2$ और $x = s + 3t, y = 2s - t$ है,तो $\frac{d^2u}{ds^2} = $

Difficult
View Solution

यदि $f(x, y) = \frac{\cos(x - 4y)}{\cos(x + 4y)}$ है,तो $\left. \frac{\partial f}{\partial x} \right|_{y = \frac{x}{2}}$ का मान क्या होगा?

यदि $u = x^2 \tan^{-1}(\frac{y}{x}) - y^2 \tan^{-1}(\frac{x}{y})$ है,तो $\frac{\partial^2 u}{\partial x \partial y} = $

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