
probably need to go to a 3rd power polynomial
Posted:
Feb 20, 2017 1:42 AM


Alright, at bare minimum I need to get this table:
x y 0 0 .5 .86 1 1 1.5 .86 2 0
Now I can come reasonably close by .1 or less, but if more than .1, the game is off
So far, the best two equations for sine and cosine are these two
.4x^2 + 1.6x + .09
.6x^2  .3x +1
Troubles: the first gives 0 as .09, then gives .8 which is good, but gives 1.3 when I need 1. The second gives 1 at 0, good, then .7 when I need .86, then .1 when I need 0 which is acceptable. So unless I can mend the two to fit better, then I must go to a 3rd power polynomial.
AP

