જો $\cos ^{-1} x-\cos ^{-1} \frac{y}{3}=\alpha$,જ્યાં $-1 \leq x \leq 1$,$-3 \leq y \leq 3$,અને $x \leq \frac{y}{3}$ હોય,તો તમામ $x, y$ માટે $9 x^2-6 x y \cos \alpha+y^2$ ની કિંમત શોધો.

  • A
    $\sin ^2 \alpha$
  • B
    $3\sin ^2 \alpha$
  • C
    $9\sin ^2 \alpha$
  • D
    $\frac{4}{9}\sin ^2 \alpha$

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જો $x \in \left(0, \frac{1}{4}\right)$ માટે,$\tan^{-1}\left(\frac{6x\sqrt{x}}{1-9x^3}\right)$ નું વિકલન $\sqrt{x} \cdot g(x)$ હોય,તો $g(x)$ ની કિંમત શોધો.

જો $f(x) = \tan^{-1}\left\{ \frac{\log(e/x^2)}{\log(ex^2)} \right\} + \tan^{-1}\left( \frac{3 + 2\log x}{1 - 6\log x} \right)$ હોય,તો $\frac{d^n y}{dx^n}$ શું થાય? $(n \ge 1)$

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$\tan ^2(\sec ^{-1} 4) + \cot ^2(\operatorname{cosec}^{-1} 3)$ નું મૂલ્ય શોધો.

જો $\tan ^{-1}\left(\frac{x-1}{x-2}\right)+\tan ^{-1}\left(\frac{x+1}{x+2}\right)=\frac{\pi}{4}$ હોય,તો $x$ ની કિંમતો શોધો.

સમીકરણ $\tan ^{-1} x+\tan ^{-1} 2 x=\frac{\pi}{4}$ નું સમાધાન કરતી $x$ ની વાસ્તવિક કિંમત છે

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