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f(t) = (x(t), y(t)) t 0 ≤ t < t 1 color

drag navigate graph shift +drag control level of zoom esc center viewport, set default zoom shift + esc wipe plots from graph u undo last plot

Usable keywords: sin, cos, tan, asin, acos, atan, pow, log, sqrt, abs, PI, E. You can also use any JavaScript you like (math functions are in the Math namespace).