00:01
We've been given information about two functions, f and g.
00:04
We are asked to find their derivatives of some other functions or composite functions when x equals 2.
00:14
First, for f with g of x, let's rewrite that into a form we can work with.
00:22
We are taking the derivative of this at x equals 2.
00:28
Well, if x is 2, then i have, at the x value of 2, f of g of 2, and g of 2 is 3.
00:42
Sorry, g of 2 is 1.
00:43
So we're really saying that the f function we have is going to be at 1.
00:49
Since we want the derivative of that, the derivative of f of 1, we can see that we already have it.
00:57
It's negative 3.
01:00
Next, we have f of x over 2.
01:03
Now, if we're looking at x equal 2, then the function is x over 2...