Answer Happy

(1 pt) For each of the following functions, state whether they are one-to-one or not. (You must enter T or F -- True and False will not work.) 1. f: RR, f(x) = x³| 2. f: 18,00) R, f(x) = x²| 3. f: (-∞, 0] → R, ƒ(x) = x³|| 4. f: (-∞, -18] → R, ƒ(x) = x³| T: [20, ∞) R, ƒ(x) = 1/x²|