document.write( "Question 1007464: Suppose x and y are positive real numbers. Use indirect proof to show that if x2 > y3 - 1 then
\n" ); document.write( "x > y or y < 2.
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Algebra.Com's Answer #623389 by rothauserc(4718)\"\" \"About 
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consider the following two case
\n" ); document.write( "1) assume y > x, namely y = 4 and x = 3, then
\n" ); document.write( "3^2 > 4^3 - 1
\n" ); document.write( "9 > 63
\n" ); document.write( "this is false
\n" ); document.write( "2) assume y > 2, namely 3
\n" ); document.write( "3^2 > 3^3 - 1
\n" ); document.write( "9 > 26
\n" ); document.write( "this is false, therefore
\n" ); document.write( "if x^2 > y^3 -1 then x > y or y < 2
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