So once again, in order to be continuous there, you at least have to be defined there. Now when you look at these, the one thing that jumps out at me, in order to be continuous for all real numbers, you have to be defined for all real numbers, and g of x is not defined for all real numbers. It's not defined for negative values of x. And so we would rule this one out. So let's think about f of x equals e to the x. It is defined for all real numbers, and as we'll see, most of the common functions that you've learned in math, they don't have these strange jumps or gaps or discontinuities. Some of them do, functions like one over x and things like that, but things like e to the x, it doesn't have any of those.