0:00
All right.
00:01
So what i did is we have the x values.
00:06
Well, we actually don't have the x values yet.
00:08
But we're given y equals 3 plus 4x cubed.
00:15
And what we care about is values between 0 and 1.
00:19
But we actually don't even care about those two values.
00:22
When they say n equals 5, what that means is that you want to do 1 minus 0 divided by 5.
00:30
And what i'm finding is, so that's going to be 0.
00:32
0 .2.
00:33
That's the change in x as we go from one table, one value to the next.
00:38
But we don't even want that 0 .2 because they ask for the midpoint rule.
00:44
So what's the midpoint between 0 and 0 .2? well, it'd be 0 .1.
00:49
So that's the value i'm going to plug in for this x.
00:52
And i already typed this into my calculator.
00:54
I got 3 .004.
00:57
So then i want the next midpoint.
01:00
And i'll just do like talk about the next next change in x would be 0 .4 because i'm changed by that much.
01:08
But i really just want 0 .3 because it's the midpoint.
01:11
So on my calculator, i got 3 .108...