00:01
And these three problems, we need to use the product rule as well as the chain rule.
00:07
So we have, i'm going to say this is the first term and this is the second term.
00:12
So we have the first term times the derivative of the second term, plus the second term times the derivative of the first term.
00:19
Now, we just pull this down so we get 5x.
00:23
D, d dx of 3x.
00:27
Again, we could use a chain rule here, called this u.
00:30
But that's just going to be, hopefully you can kind of figure it out by now in your head, so that's just going to be three, either the three x.
00:38
Then here we pull this one down, and the derivative of 5x is just 5.
00:44
And so we can pull some things out, and we get 5 times the quantity x plus 1 times either the 3x.
00:52
That is our derivative there.
00:56
Did i, i must something up there.
00:59
I missed, there's a, yeah.
01:02
Let's see here.
01:03
Let me clean this up.
01:04
This should be 5 times 3x plus 1...