$x > 0$ डोमेन में $f(x) = \int_0^x \frac{\sin t}{t} dt$ के चरम बिंदु (extrema) हैं

  • A
    $(2n + 1)\frac{\pi}{2}; n = 1, 2, \dots$
  • B
    $(4n + 1)\frac{\pi}{2}; n = 1, 2, \dots$
  • C
    $(2n + 1)\frac{\pi}{4}; n = 1, 2, \dots$
  • D
    $n\pi; n = 1, 2, \dots$

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Difficult
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