Onto Function
Onto Function
A function f from A to B is called onto if for all b in B there is an a in A such that f (a) = b. All elements in B are used.
By definition, to determine if a function is ONTO, you need to know information about both set A and B.
When working in the coordinate plane, the sets A and B may both become the Real numbers, stated as f : R→R
Onto Function
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