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(5) Let A {q, r, s, t and B = {17, 18, 19, 20}. Determine which of the following are functions. Explain why or why not. а. fS(5) Give the ranges of each of these functions where sets A and B are as stated in 2. #1 a. fA x B,where f = {(q,17), (r, 18)(10) State whether each of these functions, where sets A and B are as stated in #1, are one-to-one, onto, both, or neither, a(9) Which of the following functions from R -» R are one-to-one (injective), onto (surjective), or both (bijective)? Prove yo5. (9) Let f- {-2, 3), (-1, 1, (0, 0), (1, -1), (2, -3)} and let g {-3, , (-1, -2), (0, 2), (2, 2), (3, 1)}. Find: (дo fD(0)6. (6) Define q, r, and s, all functions on the integers, by q(n) = n2 + 2, r(n) = n-3, and s(n) = 4n - 2. Determine: a. (qo(6) Consider the function f (on the reals) defined by f(x) Зх + 6. 7. Find f1x) Answer у-3х+6 х-Зу+6 у-X/3-2 y-f(x)-x/3-2 а.

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