MCQ
$\frac{ d }{ dx }[\log (\log x )]=\ldots \ldots \ldots . . .\left( x \in R ^{+}\right)$
- A$\frac{1}{\log x}$
- ✓$\frac{1}{x \log x}$
- C$\frac{1}{\log (\log x)}$
- D$\log x$
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