! All right. So, how am I going to figure this out. Itʼs obvious that if A(x)=integral from 0 to x of x^2 then Aʼ(x) = x^2 But, we need to understand this: Letʼs look at the standard before we change anything. Letʼs use a simpler equation: Well, this means that for any input x, letʼs say b, the integral from 0 to b of x is equal to A(b)-A(0). So weʼre looking at area. Letʼs put down some grounds based on the true statement above.