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.

  • A
    $0$
  • B
    $-z$
  • C
    $z$
  • D
    $2x$

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Similar Questions

જો $z = \frac{y}{x} \left[ \sin \frac{x}{y} + \cos \left( 1 + \frac{y}{x} \right) \right]$ હોય,તો $x \frac{\partial z}{\partial x}$ કોના બરાબર થાય?

જો $F(u) = f(x, y, z)$ એ $x, y, z$ માં $n$ ઘાત ધરાવતું સમપરિમાણીય વિધેય હોય, તો $x\frac{\partial u}{\partial x} + y\frac{\partial u}{\partial y} + z\frac{\partial u}{\partial z} = $

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.

જો $u=e^{x^2-y^2}$ હોય,તો

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