In my ideal world (where I have all the cake and next weeks lotto numbers) TW maths is even more awsmone than it is now.
It combines in one package of mathy goodness…
The TW take on spreadsheets with mathcell, http://mathcell.tiddlyspot.com/
The relatively easy insitue interactive graphs (move that slider, watch that sine wave change, ooohhh):
Graphs — a non-linear personal web notebook
And the KaTeX plugin, obviously!
All working seamlessly with Evans’s formula plugin (=MATHS!!!YAY=)
Which is a long winded way of saying I found JSX graph library and wondered if it would fit the bill, Jessiecode stepping in for the venerable Evan in terms of easy to parse maths?
Failing that, look everyone, another nice way of putting graphs in websites! 
and if anyone DOES know next week’s lotto numbers drop me a line.