Integrate() function

[OAGr]

There are many cases where it's useful to integrate a function over a period. I recommend something like,

integrate(fn:continuous=>dist|number, {stepSize, min=0, max})

For example,

integrate({|t| t^2}, {stepSize: 0.1, min:0, max:20})

What this would do is basically,

upTo(min,max, stepSize) -> map(fn) -> sum

It's also possible that we could just start with an upTo method; the rest is pretty easy.

All that said, it's important to figure out the correlations aspect. This would treat them all as uncorrelated.