Discrete Math Question:

The function f(x) = x3 is bijection from R to R. Is it True or False?
a) True
b) False

a) True

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The inverse of function f(x) = x3 + 2 is __________. a) f -1 (y) = (y - 2) 1/2 b) f -1 (y) = (y - 2) 1/3 c) f -1 (y) = (y) 1/3 d) f -1 (y) = (y - 2)	The g -1({0}) for the function g(x)= ⌊x⌋ is ________. a) {x \| 0 ≤ x < 1} b) {x \| 0 < x ≤ 1} c) {x \| 0 < x < 1} d) {x \| 0 ≤ x ≤ 1}