So to do that, I'm actually going to get a spreadsheet out. I actually have tried to do this with a calculator, and it's much harder. So hopefully this doesn't confuse you too much to use a spreadsheet. And I'm going to make a couple of columns here. And spreadsheets actually have functions that will do all of this automatically, but I really want to do it so that you could do it by hand if you had to. So I'm going to make a couple of columns here. This is going to be my x column.