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National and Regional Contests
Brazil Contests
Brazil National Olympiad
1983 Brazil National Olympiad
5
5
Part of
1983 Brazil National Olympiad
Problems
(1)
smallest k such that 1 \le n ^{1/n} \le k for all positive integers n
Source: Brazilian Mathematical Olympiad 1983 P5
7/27/2018
Show that
1
≤
n
1
/
n
≤
2
1 \le n^{1/n} \le 2
1
≤
n
1/
n
≤
2
for all positive integers
n
n
n
. Find the smallest
k
k
k
such that
1
≤
n
1
/
n
≤
k
1 \le n ^{1/n} \le k
1
≤
n
1/
n
≤
k
for all positive integers
n
n
n
.
number theory
minimum
positive integers
Inequality