# Answer: In 44–55 indicate which of the functions in the

## Problem 50E Chapter 7.2

Discrete Mathematics with Applications | 4th Edition

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Problem 50E

In 44–55 indicate which of the functions in the referenced exercise are one-to-one correspondences. For each function that is a one-to-one correspondence, find the inverse function.Exercise 21Reference:Let S be the set of all strings of 0’s and 1’s, and define l: S ? Znonneg by l(s) = the length of s, for all strings s in S.a. Is l one-to-one? Prove or give a counterexample.b. Is l onto? Prove or give a counterexample.

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Answer: In 44–55 indicate which of the functions in the

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