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PEN K Problems
9
K 9
K 9
Source:
May 25, 2007
function
Functional Equations
pen
Problem Statement
Find all functions
f
:
N
0
→
N
0
f: \mathbb{N}_{0}\rightarrow \mathbb{N}_{0}
f
:
N
0
→
N
0
such that for all
n
∈
N
0
n\in \mathbb{N}_{0}
n
∈
N
0
:
f
(
f
(
n
)
)
+
f
(
n
)
=
2
n
+
6.
f(f(n))+f(n)=2n+6.
f
(
f
(
n
))
+
f
(
n
)
=
2
n
+
6.
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