Question:
Mark $(\sqrt{ })$ against the correct answer in the following:
If $y=2^{x}$ then $\frac{d y}{d x}=$ ?
A. $\mathrm{x}\left(2^{\mathrm{x}-1}\right)$
B. $\frac{2^{x}}{(\log 2)}$
C. $2^{x}(\log 2)$
D. none of these
Solution:
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