જો $\int \frac{\sin \left(x-\frac{\pi}{4}\right)}{2+\sin 2 x} d x=-\frac{1}{\sqrt{2}} \tan ^{-1}(f(x))+C$ હોય,તો $f(x)=$

  • A
    $\sin x-\cos x$
  • B
    $\sqrt{2} \cos \left(x-\frac{\pi}{4}\right)$
  • C
    $\sin \left(x-\frac{\pi}{4}\right)$
  • D
    $\sqrt{2} \tan \left(x-\frac{\pi}{4}\right)$

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જો $\int \frac{\log \left(t+\sqrt{1+t^2}\right)}{\sqrt{1+t^2}} dt=\frac{1}{2}(g(t))^2+c$ જ્યાં $c$ એ સંકલનનો અચળાંક છે,તો $g(2)$ ની કિંમત શોધો.

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