| Line 8: | Line 8: | ||
| − | <math>fx(X)=2*\sqrt{R^2-D^2} if 0<D<R </math> | + | <math>fx(X)=2*\sqrt{R^2-D^2}</math> if <math> 0<D<R \,\ </math> |
| − | <math>fx(X)=2*R if D=0</math> | + | <math>fx(X)=2*R \,\ </math> if <math>D=0 \,\ </math> |
| − | <math>fx(X)=0 | + | <math>fx(X)=0 \,\ </math> |
| + | else | ||
Revision as of 17:46, 6 October 2008
Blue line => $ L/2 = \sqrt{R^2-D^2} $
Length $ = 2*(L/2)=2*\sqrt{R^2-D^2} $
let X be the length of chord
$ fx(X)=2*\sqrt{R^2-D^2} $ if $ 0<D<R \,\ $
$ fx(X)=2*R \,\ $ if $ D=0 \,\ $
$ fx(X)=0 \,\ $ else
