MCQ
$\frac{d}{d x}\left(5^x\right)$ is equal to :
- A$5^x$
- B$10^x$
- C$10^x \log _e 5$
- ✓$5^x \log _e 5$
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$\sqrt{\text{a}^2-\text{b}^2}$
$\text{a}^2+\text{b}^2$
$\text{a}^2-\text{b}^2$
If nC12 = nC8 , then n is equal to.