જો $u=\log \left(x^3+y^3+z^3-3 x y z\right)$ હોય,તો $(x+y+z)(u_x+u_y+u_z)$ ની કિંમત શોધો.

  • A
    $0$
  • B
    $x-y+z$
  • C
    $2$
  • D
    $3$

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Similar Questions

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.

જો $u=e^{x^2-y^2}$ હોય,તો

જો $u(x, y)=y \log x+x \log y$ હોય,તો $u_x u_y-u_x \log x-u_y \log y+\log x \log y$ ની કિંમત શું થાય?

જો $z = \frac{(x^4 + y^4)^{1/3}}{(x^3 + y^3)^{1/4}}$ હોય,તો $x\frac{\partial z}{\partial x} + y\frac{\partial z}{\partial y} = $

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?

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