That's 2 minus 2. But anything larger than that, 3 times, you know, if I had 2.1 thirds here, this is going to be a positive quantity. Any value of x greater than 2 thirds will make this thing right here positive. This thing is also going to be positive. So that means that when x is greater than 2 thirds, that tells us that the second derivative is positive. It is greater than 0. So in our domain, as long as x is larger than 2 thirds, we are concave upwards.