$\int {\frac{{\cos x - 1}}{{\cos x + 1}}\,dx} = $

  • A
    $2\tan \frac{x}{2} - x + c$
  • B
    $\frac{1}{2}\tan \frac{x}{2} - x + c$
  • C
    $x - \frac{1}{2}\tan \frac{x}{2} + c$
  • D
    $x - 2\tan \frac{x}{2} + c$

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જો $\int (\sin 2x + \cos 2x) dx = \frac{1}{\sqrt{2}} \sin (2x - c) + a$ હોય,તો $a$ અને $c$ ની કિંમત શું છે?

$\int {\left( {1 + x + \frac{{{x^2}}}{{2!}} + \frac{{{x^3}}}{{3!}} + \dots} \right) dx} = $

જો $\int \frac{dx}{\sqrt{2ax - x^2}} = f(g(x)) + c$ હોય, જ્યાં $c$ એ સંકલનનો અચળાંક છે, તો $f(x)$ અને $g(x)$ અનુક્રમે કોના બરાબર છે:

$\int \frac{d x}{x^2+2 x+5} = $ . . . . . . $+ C$.

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