यदि $z=\sec (y-ax)+\tan (y+ax)$ है, तो $\frac{\partial^2 z}{\partial x^2}-a^2 \frac{\partial^2 z}{\partial y^2}$ का मान ज्ञात कीजिए।

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

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Similar Questions

यदि $u \equiv u(x, y) = \sin(y + ax) - (y + ax)^2$ है,तो यह क्या दर्शाता है?

यदि $z = \frac{y}{x} \left[ \sin \left( \frac{x}{y} \right) + \cos \left( 1 + \frac{y}{x} \right) \right]$ है,तो $x \frac{\partial z}{\partial x} = $

यदि $u=\sin ^{-1}\left(\frac{x^4+y^4}{x+y}\right)$ है,तो $x \frac{\partial u}{\partial x}+y \frac{\partial u}{\partial y}$ का मान ज्ञात कीजिए।

यदि $u = \sin^{-1}\left(\frac{x}{y}\right) + \tan^{-1}\left(\frac{y}{x}\right)$ है, तो $x \frac{\partial u}{\partial x} + y \frac{\partial u}{\partial y}$ का मान क्या है?

यदि $u=\sin ^{-1}\left(\frac{x^2+y^2}{x+y}\right)$ है, तो $x \frac{\partial u}{\partial x}+y \frac{\partial u}{\partial y}$ का मान ज्ञात कीजिए:

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