00:01
This time we're given the derivative.
00:04
And so we need to start by just setting it equal to zero.
00:16
So we set that equal to zero, and we get x equals zero, x equals one.
00:24
Now, we need to take the derivative, second derivative, to see if these are maxima or minima.
00:32
So, derivative of the first times the second, plus the derivative of the second times the first.
00:51
Just simplifying.
00:58
Although i really don't need to simplify.
01:00
Let's just do the second derivative of zero.
01:04
Three times zero, that's zero.
01:06
Second one times zero also.
01:09
The second derivative of zero is zero.
01:14
E...