यदि $f(x) = \int {\left( {\frac{{{x^2} + {{\sin }^2}x}}{{1 + {x^2}}}} \right)} {\sec ^2}x\,dx$ और $f(0) = 0$ है,तो $f(1)$ का मान ज्ञात कीजिए।

  • A
    $\tan 1 - \frac{\pi}{4}$
  • B
    $\tan 1 + 1$
  • C
    $\frac{\pi}{4}$
  • D
    $1 - \frac{\pi}{4}$

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