00:02
Okay, we have section 4 .5.
00:06
Looks like we're dealing with problem number 15, where we are continuing to look at finding derivatives of expressions with natural logs.
00:16
So here i've got y is equal to 9, natural log of x plus 2 over x squared.
00:25
So in order to get this one, it looks like i have a quotient.
00:27
So i've got to remember my quotient rule.
00:30
Y is equal to f over g, which means that y prime is f prime g minus g prime f over g squared.
00:41
And in my situation, f is 9, natural log of x plus 2, and g is x squared.
00:50
So to find the derivative, y prime is.
00:55
Okay, so f prime g...