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प्रश्न
What is the derivative of \[\frac{1}{f(x)}\]?
विकल्प
\[-\frac{1}{[f(x)]^2}\cdot f'(x)\]
\[[f(x)]^2\cdot f'(x)\]
\[\frac{1}{[f(x)]^2}\cdot f'(x)\]
\[-\frac{1}{f(x)}\cdot f'(x)\]
MCQ
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उत्तर
The reciprocal function has a negative derivative. The chain rule also requires multiplication by the derivative \[f'(x)\].
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