Question: Consider the following function f: R \[\xrightarrow{{}}\] R defined by f(x) = x³ + 1 .

(a) the contrapositive is equivalent to (another way of saying) the definition of one-to-one. Use the contrapositive to explain (no proof necessary) that f is a one-to-one function.

(b) Find f ^-1. Use the definition of f ^-1 to explain why your solution works.

(c) Compute f \[\circ \] f.