MCQ
$\frac{d}{d x}\left(3^{1-2 x}\right)=\ ........ .$
- ✓$-2 \cdot 3^{1-2 x} \log _{\mathrm{e}} 3$
- B$-2 \cdot 3^{1-2 \mathrm{x}} \log 3^{\mathrm{e}}$
- C$3^{1-2} \log _e 3$
- D$\frac{1}{2} 3^{1-2 \mathrm{x}} \log 3^{\mathrm{e}}$
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