00:01
We want to graph both y equals the sign of x and y equals the greatest integer of the sign of x.
00:07
So we're going to start by just grapping y equals the sign of x.
00:10
The period of a sine curve is 2 pi.
00:13
So we're going to graph from 0 to 2 pi.
00:17
And we're going to include some significant values in between x equals 0 and x equals 2 pi.
00:22
So we're going to need 5 values of x here.
00:26
So we're going to start by labeling those as equally spaced along the x -axis.
00:36
Since we know that the sign of zero is zero, we have at this point, the sign of pi over two is one.
00:46
So i'm going to label the y coordinate with one.
00:49
Then the sign of pi is zero.
00:51
The sign of three pi over two is negative one.
00:53
So we're going to label that negative one...