And then this thing right here, right when you go right above x is greater than 0. So you have to make sure to be very close to this number. So if this number is like point 1, so you're right above 0. So this isn't going to be true for all of x greater than 0. We just want to test exactly what happens right when we go right above 0. So if this was point 1, you would have point 3 minus 2. That would be a negative number.