જો $0 < a < 1$ હોય,તો $\int \frac{dx}{1-2a \cos x + a^2} =$

  • A
    $\frac{1}{1-a^2} \tan^{-1}\left[\frac{1+a}{1-a} \tan \frac{x}{2}\right] + c$
  • B
    $\frac{2}{1+a^2} \tan^{-1}\left[\frac{1-a}{1+a} \tan \frac{x}{2}\right] + c$
  • C
    $\frac{2}{1-a^2} \tan^{-1}\left[\frac{1+a}{1-a} \tan \frac{x}{2}\right] + c$
  • D
    $\frac{2}{1+a} \tan^{-1}\left[\frac{1-a^2}{1+a^2} \tan \frac{x}{2}\right] + c$

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જો $\int e^{x+\tan^{-1} x} \left(\frac{x^2+2}{1+x^2}\right) dx = e^{f(x)} + c$ હોય, તો નીચેનામાંથી કયું સત્ય છે?

ધારો કે $\int \frac{2-\tan x}{3+\tan x} dx = \frac{1}{2}(\alpha x + \log_e |\beta \sin x + \gamma \cos x|) + C$,જ્યાં $C$ એ સંકલનનો અચળાંક છે. તો $\alpha + \frac{\gamma}{\beta}$ ની કિંમત શોધો:

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