જો $u = \tan^{-1}\left(\frac{x^3 + y^3}{x - y}\right)$ હોય,તો $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

જો $u=e^{x^2-y^2}$ હોય,તો

જો $f(x, y) = \frac{\cos(x - 4y)}{\cos(x + 4y)}$ હોય,તો $\left. \frac{\partial f}{\partial x} \right|_{y = \frac{x}{2}}$ ની કિંમત શું થાય?

જો $z=\sec (y-ax)+\tan (y+ax)$ હોય,તો $\frac{\partial^2 z}{\partial x^2}-a^2 \frac{\partial^2 z}{\partial y^2}$ ની કિંમત શોધો.

વાસ્તવિક સંખ્યાઓ $x$ અને $y$ માટે $2x^{2} + y^{2} + 2xy + 2x - 3y + 8$ ની ન્યૂનતમ કિંમત શું છે?

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

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