જો $I = \int \frac{x^2 \, dx}{(x \sin x + \cos x)^2} = f(x) + \tan x + c$ હોય, તો $f(x)$ શું છે?

  • A
    $\frac{\sin x}{x \sin x + \cos x}$
  • B
    $\frac{1}{(x \sin x + \cos x)^2}$
  • C
    $\frac{-x}{\cos x(x \sin x + \cos x)}$
  • D
    $\frac{1}{\sin x(x \cos x + \sin x)}$

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ધારો કે $\int x^3 \sin x \, dx = g(x) + C$,જ્યાં $C$ એ સંકલનનો અચળાંક છે. જો $8\left(g\left(\frac{\pi}{2}\right) + g^{\prime}\left(\frac{\pi}{2}\right)\right) = \alpha \pi^3 + \beta \pi^2 + \gamma$,જ્યાં $\alpha, \beta, \gamma \in \mathbb{Z}$,તો $\alpha + \beta - \gamma$ ની કિંમત શોધો:

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