And we know that we're dealing with, the function is concave upwards at this point. And that tells us that this is going to be a minimum point. So what is f of, and we should actually get the coordinates so we can actually graph it. That was the whole point of this video. And f of 1 is equal to what? f of 1, let's go back to our original function, is 3 times 1. 1 to the 4th is just 1.