मान लीजिए कि $f$,$x = 0$ पर अवकलनीय है और $f'(0) = 1$ है। तो $\lim_{h \to 0} \frac{f(h) - f(-2h)}{h} = $

  • A
    $3$
  • B
    $2$
  • C
    $1$
  • D
    $-1$

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