00:01
Okay, i want to solve this inequality graphically.
00:05
The first part of the problem in a is asking me where f of x is greater than zero.
00:14
So f of x means y, really, if you think about it.
00:20
And if i want to know where it's greater than zero, i want to know where is it above the x axis.
00:26
So i'm just going to highlight that in blue.
00:29
I'm above the x axis here.
00:31
And i'm above the x -axis right there.
00:36
So how do i say that in interval notation? and remember, i want to be greater than zero, not equal to.
00:44
So from negative infinity, until i get to zero, i'm above, and i'm using parentheses.
00:54
I'm also above between two and three...