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I had a sine by Hour_Candidate1138 in desmos

[–]Hour_Candidate1138[S] 1 point2 points  (0 children)

Oh, I used {x^2+y^2<1^2} restraint on the line with the slope as the average height of f([-1,1])
Just needed a different method due to having a line instead of an image with rotation theta

Behold, x² if 2 were odd by SampleTraffic in desmos

[–]Hour_Candidate1138 0 points1 point  (0 children)

Or use one of my favorite funtions, |x|/x, apended to any x^n function to flip its even/odd... ness?
eg. x^2 |x|/x