Puoi aprire il codice e modificare la funzione: vedi l'Help
You can open the Code and modify the function: see the Help
HELP

// ---- f blue, g green, h red, k orange ----

function f(x) { y =  x*x-1 ; return y }
function g(x) { y = 2*x; return y }
function h(x) { y = x*x*x-x; return y }
function k(x) { y = x*x*x/3-x-2/3; return y }

aX = -3; bX = 3; aY = -3; bY = 3
Dx = 1; Dy = 1

s0=["F",-2.5,2.5]; s1=["F '",0.5,2.5]; s2=["G",-2.6,-1.5]; s3=["H",-0.4,0.7]