Suppose F: R → Z Where F(x) = 82x $f ^ { - 1 }$

question 63

Short Answer

Suppose f: R → Z where f(x) = 82x − 19.
(a) If A = {x | 1 ≤ x ≤ 4} , find f(A).
(b) If B={3,4,5,6,7} , find f(B)
(c) If C={-9,-8} , find $f ^ { - 1 }$ (C)
(d) If D={0.4,0.5,0.6} , find $f ^ { - 1 }$ (D)

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