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Mathematics
Mathematics
Problem
Show that the function
f
:
R
→
R
f:\mathbb R\to\mathbb R
f
:
R
→
R
given by
f
(
x
)
=
x
3
+
x
f(x)=x^{3}+x
f
(
x
)
=
x
3
+
x
is one–one.
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