જો $y=\cos ^{-1}\left(\frac{a^2-x^2}{a^2+x^2}\right)+\sin ^{-1}\left(\frac{2 a x}{a^2+x^2}\right)$ હોય,તો $\frac{d y}{d x}$ ની કિંમત શોધો.

  • A
    $\frac{a}{x^2+a^2}$
  • B
    $\frac{2 a}{x^2+a^2}$
  • C
    $\frac{4 a}{x^2+a^2}$
  • D
    $\frac{a^2}{x^2+a^2}$

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$a>0$ માટે,જો $f(x)=ax+b$ એ $[-1,1]$ થી $[0,2]$ પરનું વ્યાપ્ત વિધેય હોય,તો $\cot \left[\tan ^{-1} \frac{1}{7}+\tan ^{-1} \frac{1}{8}+\tan ^{-1} \frac{1}{5}\right]=$

જો $y = \sum_{k=1}^{6} k \cos^{-1} \left\{ \frac{3}{5} \cos kx - \frac{4}{5} \sin kx \right\}$ હોય,તો $x = 0$ આગળ $\frac{dy}{dx}$ ની કિંમત શોધો.

જો $y = \tan^{-1} \left( \frac{\ln(e/x^2)}{\ln(ex^2)} \right) + \tan^{-1} \left( \frac{3 + 2 \ln x}{1 - 6 \ln x} \right)$ હોય,તો $\frac{d^2y}{dx^2} =$

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જો $0 \leq A \leq \frac{\pi}{4}$ હોય,તો $\tan ^{-1}\left(\frac{1}{2} \tan 2 A\right)+\tan ^{-1}(\cot A)+\tan ^{-1}(\cot ^{3} A)$ ની કિંમત શોધો.

જો $f(x) = \operatorname{Sec}^{-1}\left(\frac{1}{2x^2-1}\right)$ અને $g(x) = \operatorname{Tan}^{-1}\left(\frac{\sqrt{1+x^2}-1}{x}\right)$ હોય,તો $g(x)$ ની સાપેક્ષે $f(x)$ નું વિકલન શું થાય?

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