Simple sample where you can play with math estimation with nice visualization.
simply copy this into your terminal to get the demo locally
git clone https://github.com/alekspickle/math-estimationLibs, used for visualization are d3(sub dependent of function-plot) and function-plot. And they are awesome, I encourage you to check them out! Specifically the latter one, It's the best lib I have found so far for displaying functions (after canvas anyway).