But more important than this, and this is kind of a pseudodefinition here, is the idea that when we take the integral, when we take the area under the curve over the entire x- or the entire t-axis, I guess we could say, when we take the area under this curve, and obviously, it equals zero everywhere except at t is equal to c, when we take this area, this is the important point, that the area is equal to 1.