00:01
Okay, we're using the linear approximation, and i'm a big fan of point slope form when you're doing this problem.
00:07
It doesn't look like a lot of calculus.
00:10
And a lot of people are used to y minus y1.
00:12
Well, i always add that y1 over.
00:15
So the first piece is to know that you're doing f of negative 3.
00:20
So that's the x coordinate is equal to negative 4.
00:24
So you're going to see me put a negative 3 there and a negative 4 there.
00:28
So a change is to plus.
00:32
In your equation, the y and the x is stay the same.
00:36
It's your slope that is found by doing f prime because the slope is the derivative at that point.
00:45
So in this case, we know that the slope at that point is 2...