How to plot a path according to a function in scene view

Questions & Answers
1

given a function e.g x^2 , in what ways can I draw a discrete path from point a to b with interval h, all within scene view? (pic)
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do I simply run a for loop , i from a to b with step h, whenever a change in function is detected and instantiate GameObjects at f(i) ?

2

you can run a simple loop and use Handles.DrawLine from OnSceneGUI in an editor script.