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Mathematics
Problem
Explain whether the function
f
:
Z
→
Z
f: \mathbb Z \to \mathbb Z
f
:
Z
→
Z
defined by
f
(
n
)
=
2
n
+
1
f(n)=2n+1
f
(
n
)
=
2
n
+
1
is injective.
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