Mathematics Homework Solutions
Problem
#22690

Functions

Which functions are one-to-one? Which functions are onto? Describe the inverse function

A)F:Z^2-N where f is f(x,y) x^2 +2y^2
B)F:N->N where f is f(x) = x/2 (x even) x+1 (x odd)
C)F:N->N where f is f(x) = x+1 (x even) x-1 (x odd)
D)h:N^3 -> N where h(x,y,z) = x + y -z


Solution Summary

This shows how to identify inverse, one-to-one, and onto functions.

Solution
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