જો $f(x) = \frac{\sin^2 \pi x}{1+\pi^x}$ હોય,તો $\int (f(x) + f(-x)) \, dx$ ની કિંમત શોધો.

  • A
    $\frac{x}{2} - \frac{\sin \pi x}{2 \pi} + c$,(જ્યાં $c$ એ સંકલનનો અચળાંક છે)
  • B
    $\frac{1}{2} x - \frac{\sin 2 \pi x}{4 \pi} + c$,(જ્યાં $c$ એ સંકલનનો અચળાંક છે)
  • C
    $\frac{x}{2} - \frac{\cos \pi x}{2 \pi} + c$,(જ્યાં $c$ એ સંકલનનો અચળાંક છે)
  • D
    $\frac{1}{1+\pi^x} + \frac{\cos^2 \pi x}{2 \pi} + c$,(જ્યાં $c$ એ સંકલનનો અચળાંક છે)

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