Difference between revisions of "2005 Canadian MO Problems/Problem 2"

 
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==Problem==
 
==Problem==
Let <math>(a,b,c)</math> be a Pythagorean triple, ''i.e.'', a triplet of positive integers with <math>a^2+b^2=c^2</math>.
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Let <math>(a,b,c)</math> be a Pythagorean triple, ''i.e.'', a triplet of positive integers with <math>{a}^2+{b}^2={c}^2</math>.
  
 
* Prove that <math>(c/a + c/b)^2 > 8</math>.
 
* Prove that <math>(c/a + c/b)^2 > 8</math>.

Revision as of 18:52, 28 July 2006

Problem

Let $(a,b,c)$ be a Pythagorean triple, i.e., a triplet of positive integers with ${a}^2+{b}^2={c}^2$.

  • Prove that $(c/a + c/b)^2 > 8$.
  • Prove that there does not exist any integer $n$ for which we can find a Pythagorean triple $(a,b,c)$ satisfying $(c/a + c/b)^2 = n$.

Solution

See also