જો $(a+\sqrt{2} b \cos x)(a-\sqrt{2} b \cos y)=a^2-b^2$ જ્યાં $a>b>0$,તો $\left(\frac{\pi}{4}, \frac{\pi}{4}\right)$ બિંદુએ,$\frac{dy}{dx}=$

  • A
    $\frac{a+b}{a-b}$
  • B
    $\frac{a-b}{a+b}$
  • C
    $\frac{a-2 b}{a+2 b}$
  • D
    $\frac{2 a+b}{2 a-b}$

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જો $2x^y + 3y^x = 20$ હોય,તો $(2, 2)$ આગળ $\frac{dy}{dx}$ ની કિંમત શોધો.

જો $\sin(xy) + \cos(xy) = 0$ હોય,તો $\frac{dy}{dx} = $

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

જો $f(x) = \frac{1}{x^2} \int_3^x (2t - 3f'(t)) dt$ હોય,તો $f'(3)$ ની કિંમત શોધો.

જો $x^{2} y^{2} = \sin^{-1} \sqrt{x^{2} + y^{2}} + \cos^{-1} \sqrt{x^{2} + y^{2}}$ હોય,તો $\frac{dy}{dx} = $

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