વક્ર $y=(1+x)^{2y}+\cos^{2}(\sin^{-1} x)$ માટે $x=0$ આગળ અભિલંબનું સમીકરણ શું છે?

  • A
    $y=4x+2$
  • B
    $x+4y=8$
  • C
    $y+4x=2$
  • D
    $2y+x=4$

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જો $x^y=y^x$ હોય,તો $x(x-y \log x) \frac{d y}{d x}$ ની કિંમત શું થાય?

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