just watch it fill up and adjust the sliders if you want btw I'm really bad at calculus don't judge I'm only 14 :) credit to @Noroz for his text engine To remix the problem you needa update the calculus and inverse function(s), if you really want to just comment the function and the range you want to see and I'll put it in Wolfram Alpha ;)
12/3/16 Can draw the function... yeah need help with the calc if someone could comment that that would help