$x = 3$ पर $\sqrt{x^2 + 16}$ का $\frac{x}{x - 1}$ के सापेक्ष परिवर्तन की दर ज्ञात कीजिए।

  • A
    $-12/5$
  • B
    $6/5$
  • C
    $-6/5$
  • D
    $3$

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