જો $\int \frac{dx}{1 + \sin x} = \tan \left( \frac{x}{2} + a \right) + b$ હોય,તો

  • A
    $a = \frac{\pi}{4}, b = 3$
  • B
    $a = -\frac{\pi}{4}, b = 3$
  • C
    $a = \frac{\pi}{4}, b = \text{સ્વેચ્છ અચળાંક}$
  • D
    $a = -\frac{\pi}{4}, b = \text{સ્વેચ્છ અચળાંક}$

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