Question

The function f is defined by

Answer 1

\[f:x \rightarrow x^2-x,x \in~\mathbb{R}\]

Answer 2

State whether f is one-to-one,giving a reason for the statement.If the domain of f is restricted to the subset of\[\mathbb{R}\]for which\[x\ge~k\]find the least value of k for which f is one-to-one.

Answer 3

Answer:
No.
f(0)=f(1)=0

Answer 4

Not sure how to do next..
find the least value of k for which f is one-to-one.