જો $u = \sin^{-1}\left(\frac{y}{x}\right)$ હોય,તો $\frac{\partial u}{\partial x}$ ની કિંમત શું થાય?

  • A
    $-\frac{y}{x^2 + y^2}$
  • B
    $\frac{x}{\sqrt{1 - y^2}}$
  • C
    $-\frac{y}{\sqrt{x^2 - y^2}}$
  • D
    $-\frac{y}{x\sqrt{x^2 - y^2}}$

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

જો $z = \sin^{-1}\left( \frac{x+y}{\sqrt{x} + \sqrt{y}} \right)$ હોય,તો $x\frac{\partial z}{\partial x} + y\frac{\partial z}{\partial y}$ ની કિંમત શોધો.

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 $u = \sin^{-1} \sqrt{\frac{x^2 + y^2}{x + y}}$ હોય,તો $x u_x + y u_y$ ની કિંમત શોધો.

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જો $u=\sin ^{-1}\left(\frac{x^4+y^4}{x+y}\right)$ હોય,તો $x \frac{\partial u}{\partial x}+y \frac{\partial u}{\partial y}$ ની કિંમત શોધો.

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