equations = [
{ label: "y = x*x*sin(1/x)", fna: x => x*x*Math.sin(1/x) },
{ label: "y = x*sin(1/x)", fna: x => x*Math.sin(1/x) },
{ label: "y = sqr(x*x+2)", fna: x => Math.sqrt(x*x+2) },
{ label: "y = cos(x * exp(-x/5))", fna: x => Math.cos(x*Math.exp(-x/5)) },
{ label: "y = 6+2*x*x-x*x*x*x", fna: x => 6+2*x*x-x*x*x*x },
{ label: "y = sqr(x*x+2)*sin(x)", fna: x => Math.sqrt(x*x+2)*Math.sin(x) },
{ label: "y = x*sin(1/x)*sin(1/x)", fna: x => x*Math.sin(1/x)*Math.sin(1/x) },
{ label: "y = cos(x*exp(-x/5))*sin(x)", fna: x => Math.cos(x*Math.exp(-x/5))*Math.sin(x) },
{ label: "y = sin(x/ln(abs(x) + 1.1))", fna: x => Math.sin(x/Math.log(Math.abs(x)+1.1)) }
]