This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Monotonicity example. Illustration of en Monotonic function selfmade with en Inkscape June UTC Oleg Alexandrov Image Monotonicity example svg SVG source code image format path style fill nonefillrule evenoddstroke strokewidth strokelinecap buttstrokelinejoin mitermarkerstart url ArrowLstart strokemiterlimit