i need to show it with leibnez rule but i cant find how
Lets start evaluating the indefinite integral...
(1)
Setting You obtain first the integral...
(2)
... and now setting ...
(3)
... where is the socalled 'Integral exponential function'. What we have obtained is that...
(4)
If now we write in (4) instead of we obtain...
(5)
Kind regards