00:01
Here we want to find a limit, and we can use l 'hopital's if needed.
00:05
So we'll take the limit as x approaches 0 of e to the sine of x minus 1 minus x over 1 minus the cosine of x.
00:18
So the first thing i want to point out is we need to just plug in 0 and see what we get.
00:22
If i plug in 0, i'm going to get e to the sine of 0 is 0 minus 1 minus 0.
00:28
0.
00:28
So that's 1 minus 1 is 0 divided by 1 minus 1 is 0.
00:32
So we get 0 divided by 0.
00:33
That tells us we can use l 'hopital's rule.
00:36
It says if we take the derivative of top and bottom, the derivative doesn't change, or the limit doesn't change.
00:41
So the derivative of e to the stuff is e to the stuff, and then multiply by the derivative of the stuff.
00:47
So the derivative of sine is cosine...