Software for "connecting" and plotting multiple equations

[InvalidState]

Hello

Right now I'm going through Feynmans lectures and sometimes the equations really get tons of substitutions so you must look back at where something fits a lot.

So my question: is there some software in which you can input multiple (simple) equations and place them around like a "mind map". Then you connect the variables from one equation to another and you can plot the graph of some variable.

Then you would change some variable down along the line of some long derivation and all the previous equations graphs would get update so you would see how stuff related better visually.

Does anyone know of something like this?
(hope it was clear enough :S)

 

[Borg]

Try this site - http://www.falstad.com/mathphysics.html. There are lots of apps where you can modify the parameters and see how the output changes.