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

function f(x) { y = Math.pow(x,5)-7*Math.pow(x,4)+9*Math.pow(x,3)+9*x*x-7*x+1; return y }

// aX=-10; bX=10; aY =-100; bY = 100
// Dx = 5; Dy = 10

aX = -2; bX = 5; aY = -100; bY = 50
Dx = 1; Dy = 10 = 5

// aX = 0; bX = 0.8; aY = -1; bY = 3
// Dx = 0.1; Dy = 1