Let's start with functions - yes, i feel like doing this again. you never know, i may come up with something even better than previously! Functions are used to find degrees in a circle, like all useful maths, as then you can measure the angles that, for example, the screw tip needs to be 'cut at.' of course, this could be made easier with parabola, but we will get there later... for now, functions! As a polynomial function, a function is expressed as; Now, if we were to observe that [x^k equals x^k], and [x^1 = x^1], then we are left with very little to do, yes? this would mean that we need only f = b + 2a, yes?