f

const f = board.create('functiongraph', [function(x) { return Math.sin(x); }]);
const p = board.create('point', [0, 0]);

const pc = board.create('point', [0, 0]);
const p1 = board.create('point', [0, 1]);
const c=board.create('circle', [pc, p1], {strokeColor: 'blue', strokeWidth: 2});