यदि $f(x) = 1 + x + x^2 + \ldots + x^{1000}$ है,तो $f^{\prime}(-1) = $ . . . . . .

  • A
    $-50$
  • B
    $-500$
  • C
    $-100$
  • D
    $500500$

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यदि $f(x)=x^{n}$,जहाँ $n$ एक अऋणात्मक पूर्णांक है,तो $n$ के वे मान जिनके लिए सभी $\alpha, \beta > 0$ के लिए $f^{\prime}(\alpha+\beta)=f^{\prime}(\alpha)+f^{\prime}(\beta)$ है,हैं:

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