Fongshan (matimatix)

Demya piej ya a fi wah nesiseri aatikl.
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Arrow diagram of a function (non-injective and non-surjective).svg

Ina matimatix, fongshan a di rilieshan bitwiin wah set a hinput ah wah set a poermisebl output wid di prapati we hebri dege hinput rilietid tu hegzakli wan output.