00:01
We are looking for the critical numbers for this function.
00:05
The function itself is never non -differential because multiplied out, that would be a polynomial.
00:10
So all we really need to do is identify where the derivative is zero.
00:16
To find the derivative, we will use the product rule.
00:19
First, times the derivative of the second, which uses the chain rule.
00:26
Power out front, subtract one from the old power, and multiply by the derivative of the inside.
00:32
But that's just one plus the second term times the derivative of the first.
00:41
And on the derivative of the first, we bring the power out front, subtract one from the old power, so it's the first, and multiply by the derivative of the inside.
00:52
But again, that's just one.
00:54
Now, there is a common two, x minus one, and x minus three.
01:01
So we're going to put that in front.
01:08
Now, what's that leave us with? well, here, that's going to leave us with just an x minus one.
01:16
And the second one, that's just going to leave us with an x minus three...