MCQ
$\int \frac{e^{-x}}{1+e^x} d x=\ldots \ldots \ldots$
- ✓$\log \left(1+e^x\right)-x-e^{-x}+c$
- B$\log \left(1+e^x\right)+x-e^{-x}+c$
- C$\log \left(1+e^x\right)-x+e^{-x}+c$
- D$\log \left(1+e^x\right)+x+e^{-x}+c$
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.