00:02
Okay, so in this problem we have r prime, which is the rate of revenue for amazon, and is equal to this expression right here.
00:15
T is from 0 to 6, and 0 is the year 2006.
00:21
So, question a asked by how much did amazon's revenue increase from 2006 to 2012.
00:28
So since this is r prime, if we integrate r prime, from 0 to 6 because 2006 is year 0 so 2012 that would be 6 years so from 0 to 6 of r prime then we would get the revenues the net change in revenue so let's integrate that using your graphing calculator so 0 .545 043 e okay i have to remember this so so 0 to 6 .545, oh, that's not what i want.
01:18
545, 043e to the .291t.
01:29
043e to the .291t.
01:33
So i'll use x for t.
01:38
So it's dx instead of dt.
01:40
Let's make this 0 .545 -043.
01:45
Okay...