The following functions are defined on the set of real numbers: I. $f(x) = 2x - 1$ II. $g(x) = x^{2} + 2$ III. $h(x) = x^{3}$ Which of these functions are one-to-one? A) I and II B) Only I C) I, II and III D) I and III E) Only II
The following functions are defined on the set of real numbers:
I. $f(x) = 2x - 1$
II. $g(x) = x^{2} + 2$
III. $h(x) = x^{3}$
Which of these functions are one-to-one?
A) I and II
B) Only I
C) I, II and III
D) I and III
E) Only II