જો $u = x{y^2}{\tan ^{ - 1}}\left( {\frac{y}{x}} \right)$ હોય,તો $x{u_x} + y{u_y} = $

  • A
    $2u$
  • B
    $u$
  • C
    $3u$
  • D
    $u/3$

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Similar Questions

જો $u \equiv u(x, y) = \sin(y + ax) - (y + ax)^2$ હોય,તો તે શું સૂચવે છે?

જો $z=\log (\tan x+\tan y)$ હોય,તો $(\sin 2 x) \frac{\partial z}{\partial x}+(\sin 2 y) \frac{\partial z}{\partial y}$ ની કિંમત શોધો.

જો $u = (x^2 + y^2 + z^2)^{3/2}$ હોય,તો $\left( \frac{\partial u}{\partial x} \right)^2 + \left( \frac{\partial u}{\partial y} \right)^2 + \left( \frac{\partial u}{\partial z} \right)^2 = $

જો $u = x y^2 \tan^{-1}\left(\frac{y}{x}\right)$ હોય,તો $x \frac{\partial u}{\partial x} + y \frac{\partial u}{\partial y}$ ની કિંમત શોધો.

જો ${x^x}{y^y}{z^z} = c$ હોય,તો ${{\partial z} \over {\partial x}} = $

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