MCQ
`int $e^{3x}/(e^{3x} + 1)`dx =$ ______
- A`$1/3log|e^{3x} - 1| + c`$
- ✓$`1/3log|e^{3x} + 1| + c`$
- C$3 \log \left|e^{3 x}+1\right|+c$
- D$3 \log \left|e^{3 x}-1\right|+c$
✓
Answer
Correct option: B.
$`1/3log|e^{3x} + 1| + c`$
B
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