​

function setup() {

  expressionsSets = [

    new ExpressionsSet()

      .add(new Expression().define(x => 2 * x).smooth(10).style({width: 5, color: "#E5E"}))

      .add(new Expression().define(x => x * x).smooth(10).style({width: 5, color: "#E55"}))

      .add(new Expression().define(x => cos(x) + 1).smooth(10).style({width: 5, color: "#5E5"}))

  ];

  createCanvas(960, 540);

}

​

function draw() {

  background("#111");

  expressionsSets.forEach(expressionsSet => expressionsSet.display(0, 3, 0, width, 0, 9, height, 0));

}