00:02
We're on the decimal's graphing calculator, but if you're doing this on your handheld, you're going to go to your y equals.
00:07
Then you're going to put in the equation, y equals 800 x squared minus x to the fourth.
00:16
Then we're going to answer parts a, b, and c altogether.
00:20
So for your y2, put in y equals 100 ,000.
00:26
For your y3, put in y equals 160 ,000.
00:31
And for your y for y equals 200 ,000.
00:38
We do not see what is happening here in the window that, especially if you're in a standard window or whatever window was left off in your screen.
00:50
We know we have to get up all the way up to 200 ,000.
00:53
But we don't know that we actually have to go much left and right for our x's.
00:59
Let's first zoom way out, way, way out.
01:06
There's our three lines, our 100, 160, and 200 ,000 level.
01:20
Now i'm going to change by going to the graph settings, my x's to be like from, let's see what it is, negative 10 to 10.
01:34
I think we're going to have to go further than that.
01:36
So what's negative 50 to 50? i think that actually works quite well.
01:44
You could probably go even less than that.
01:46
So if you want on your handheld to go to your...