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 = $

  • A
    $0$
  • B
    $-1$
  • C
    $1$
  • D
    $2$

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

જો $u = x^2 + y^2$ અને $x = s + 3t, y = 2s - t$ હોય,તો $\frac{d^2u}{ds^2} = $

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

જો $u=e^{x^2-y^2}$ હોય,તો

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