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Problem 1
x^y + y = y^x + x
x^y + y = y^x + x
Source: unknown
April 12, 2006
calculus
derivative
number theory unsolved
number theory
Problem Statement
Solve in positive integers
x
y
+
y
=
y
x
+
x
x^y + y = y^x + x
x
y
+
y
=
y
x
+
x
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