$x = 1$ पर $f(x) = 1 + x + x^{2} + x^{3} + \dots + x^{50}$ का अवकलज ज्ञात कीजिए।

  • A
    $1275$
  • B
    $1225$
  • C
    $1325$
  • D
    $1175$

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