AoPS Wiki talk:Problem of the Day/July 13, 2011
Problem
AoPSWiki:Problem of the Day/July 13, 2011
Solution
We have , so
, and
. However, we already know that the LHS is
, so we have
, and
.
AoPSWiki:Problem of the Day/July 13, 2011
We have , so
, and
. However, we already know that the LHS is
, so we have
, and
.
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