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Mathematics
Problem
Explain, in one or two sentences, why the function
f
(
x
)
=
x
3
f(x)=x^{3}
f
(
x
)
=
x
3
is one-to-one on
R
\mathbb{R}
R
whereas
g
(
x
)
=
x
2
g(x)=x^{2}
g
(
x
)
=
x
2
is not.
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