00:01
Here i want to find the derivative.
00:02
So this is going to be one that involves doing chain rule multiple times.
00:07
So with chain rule, i'm going to start with whatever's on the outside and take the derivative of the outside function and then progressively move inward by multiplying by the derivative of my inside functions.
00:18
So what i can do is i'm going to have a 4 tan of sine squared of x cubed plus 2x as the derivative of my outside function because it's, oh, and then cubed.
00:35
Yes, and then, yeah, cubed, because we know that with power rule, we bring down the exponent and then subtract one.
00:47
Okay, so then from there, i'm multiplying by the derivative of my inner function.
00:53
So that would be the derivative of tangent.
00:56
So the derivative of tangent is secant squared.
01:00
So i would have times a secant squared of what's in parentheses, sine squared of x cubed plus 2x.
01:17
Okay, so then i'm multiplying by the derivative of the next function.
01:22
So that's going to be the sine squared.
01:24
So i'm going to bring down the exponent of 2...