MCQ
$\int \frac{e^{2 x}-1}{e^{2 x}+1} d x=$
- A$\log \left(e^{2 x}+1\right)+c$.
- ✓$\log \left(e^x+e^{-x}\right)+c$
- C$\log \left(e^x-e^{-x}\right)+c$
- D$e^{2 x}+c$
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