मान लीजिए $f(x)$ और $g(x)$ दो फलन हैं जिनके $3^{rd}$ क्रम के अवकलज $f'''(x)$ और $g'''(x)$ सभी $x \in R$ के लिए परिमित और शून्येतर हैं। यदि सभी $x \in R$ के लिए $f(x)g(x) = 1$ है,तो $\frac{f'''}{f'} - \frac{g'''}{g'}$ का मान क्या होगा?

  • A
    $3\left( \frac{f''}{g} - \frac{g''}{f} \right)$
  • B
    $3\left( \frac{f''}{f} - \frac{g''}{g} \right)$
  • C
    $3\left( \frac{g''}{g} - \frac{f''}{f} \right)$
  • D
    $3\left( \frac{f''}{f} - \frac{g''}{f} \right)$

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