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2007 German National Olympiad
1
Inequality with n-th power
Inequality with n-th power
Source: Germany 2007 - Problem 1
December 6, 2022
inequalities
algebra
real number
Problem Statement
Determine all real numbers
x
x
x
such that for all positive integers
n
n
n
the inequality
(
1
+
x
)
n
≤
1
+
(
2
n
−
1
)
x
(1+x)^n \leq 1+(2^n -1)x
(
1
+
x
)
n
≤
1
+
(
2
n
−
1
)
x
is true.
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