If you go up here, if you evaluate f of 1 half, you get 8 times 1 half to the third, which is 8 times 1 eighth, which is 1. And they actually gave us that already on this point. This is the point 1 half comma 1. And we need to find the equation for the tangent line. So the tangent line will look something like that. And to figure out this equation, we just really figure out its slope, and then we know a point that it's on, and we could either use point slope, or you could just use your kind of standard slope intercept form to give an equation for that line. So the first part, let's figure out its slope.