It will make a slight difference, using the same substitution the integral would be [itex]\log e [/itex] (base 10) which is also easily integrated as it's a constant.it is base 10, but will it make any difference if it is base 10 or any other bases?
That integrand is 3 times ln(3) .∫3×ln3.dx
ln(3) cancelled each other.
Then I would substitute u=3×
Am I right with this?