બિંદુ $(a, 1)$ આગળ અતિવલય $xy = a$ $(a \ne 0)$ ને દોરેલા સ્પર્શકનો ઢાળ કેટલો થાય?

  • A
    $1/a$
  • B
    $-1/a$
  • C
    $a$
  • D
    $-a$

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$x\sqrt{1 + y} + y\sqrt{1 + x} = 0$ હોય,તો $\frac{dy}{dx} = $

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જો $x^2 \tan ^{-1} \frac{y}{x}-y^2 \tan ^{-1} \frac{x}{y}=k$ હોય,તો $\left(\frac{d y}{d x}\right)_{(1,1)}=$

જો $ \cos y = x \cos (a+y) $ અને $ \cos a \neq \pm 1 $ હોય,તો $ \frac{d y}{d x} $ ની કિંમત શોધો.

જો $x \cos (k+y)=\cos y$ હોય,તો $y=\frac{\pi}{2}$ આગળ $\frac{dy}{dx}$ ની કિંમત શોધો.

$x^3+y^3=3xy \Rightarrow \frac{dy}{dx}=$

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