MCQ
$ \int \frac{e^x-1}{e^x+1} dx$ = ___________ + c
- ✓$2 \log \left|e^{\frac{1}{2}}+e^{\frac{-x}{2}}\right|$
- B$2 \log \left|e^{\frac{x}{2}}-e^{\frac{-x}{2}}\right|$
- C$\log \left|e^{\frac{x}{2}}+e^{\frac{-1}{2}}\right|$
- D
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