00:01
The net change of anything is always simply a difference of the final minus the initial.
00:10
That's how you find net change.
00:11
If you're talking about temperature, you take a later temperature minus the earlier, and it'll tell you how much the temperature changed.
00:17
Or your bank account, or the population, or particles, movement, or anything, net change is simply final minus initial.
00:25
Well, what if you don't know anything about the position, but you know stuff about the velocity.
00:31
So if little f is equal to big f prime, this is what integrals do.
00:38
Little f then is velocity here...