Originally Posted by

**lvleph**
Alpha is the parameter being solved for in Newton's Method, it is what makes the catenary curve. Alpha has to be solved using Newton's Method because the catenary function is nonlinear.

The center is not 72/4, in the example given, it is actually (74 5/8)/2. The given measurements are every inch. That is why it appears not to be symmetric.

If you look closely at my loop you will notice a change of variable resulting in the loop ranging from -a/2 to a/2. At least that is what my intention was. It appears that is what I have done from what I can tell by quickly looking over the code just now. If that is not the case let me know what I have done wrong and I will try to fix it.