hi, i have a problem with differentiating please help
(I think) It is well known that for an integral-defined function, differentiating them with the upper limit(i.e. 'x') takes the integral away. (*) i.e.
The problem is, I came across a weird question today:
Well, integrating first and differentiating yields the (probably) correct answer
But when i apply the rule (*) 'differentiation of integral-defined function', it gives a completely different result
Can anybody tell why?