So subtract 1 8th, subtract 1 8th. These cancel, I get two times the second derivative of y with respect to x is equal to 1 4th is the same thing as 2 8ths. So 2 8ths minus 1 8th is 1 8th. And then I can divide both sides by two, and we get a little bit of a drum roll here. You divide both sides by two, or you could say multiply both sides times 1 half. And you are going to get, you are going to get the second derivative of y with respect to x when x is negative one and y is equal to one is one over 16. And we're done.