Question

Which of these is equal to ∫eˣ * log(5eˣ) dx, where c is a constant of integration?
1) ∫eˣ * (x + log(5)) dx + c
2) ∫eˣ * (x + log(5eˣ)) dx + c
3) ∫eˣ * (x + log(5) + x) dx + c
4) ∫eˣ * (x + log(5) + log(eˣ)) dx + c