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

  • A
    $2 u$
  • B
    $u$
  • C
    $3 u$
  • D
    $\frac{1}{3} u$

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Similar Questions

यदि $u = \tan^{-1}(\frac{y}{x})$ है,तो यूलर प्रमेय के अनुसार $x \frac{\partial u}{\partial x} + y \frac{\partial u}{\partial y}$ का मान क्या होगा?

यदि $u=\log \left(x^3+y^3+z^3-3 x y z\right)$ है,तो $(x+y+z)(u_x+u_y+u_z)$ का मान ज्ञात कीजिए।

यदि $z = \frac{(x^4 + y^4)^{1/3}}{(x^3 + y^3)^{1/4}}$ है,तो $x\frac{\partial z}{\partial x} + y\frac{\partial z}{\partial y} = $

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 $u=e^{x^2-y^2}$ है,तो

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