document.write( "Question 1119107: If a^2 + b^2 = 11ab and a>b >0, prove that {(a-b)/3}=1/2 (log a + log b) \n" ); document.write( "
Algebra.Com's Answer #734567 by ikleyn(52781)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( "If a^2 + b^2 = 11ab and a>b >0, prove that {(a-b)/3}=1/2 (log a + log b)
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\n" ); document.write( "\n" ); document.write( "            The statement in the post  IS  NOT  CORRECT.   IT  IS  INCORRECT   (!)   (! !)   (! ! !).\r
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\n" ); document.write( "\n" ); document.write( "            What is the correct statement,  you will see from my solution.\r
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document.write( "If a^2 + b^2 = 11ab,  then\r\n" );
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document.write( "\"a%5E2+-+2ab+%2B+b%5E2\" = 11ab - 2ab = 9ab,   which implies\r\n" );
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document.write( "\"%28a-b%29%5E2\" = 9ab,   or\r\n" );
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document.write( "\"%28a-b%29%5E2%2F9\" = ab,   or\r\n" );
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document.write( "\"%28%28a-b%29%2F3%29%5E2\" = ab\r\n" );
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document.write( "Take the logarithm of both sides. Account that a > b > 0, according to the condition. You wull get\r\n" );
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document.write( "\"2%2Alog+%28%28%28a-b%29%2F3%29%29\" = log(a) + log(b),\r\n" );
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document.write( "which implies\r\n" );
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document.write( "\"log+%28%28%28a-b%29%2F3%29%29\" = \"%281%2F2%29%2A%28log%28%28a%29%29+%2B+log%28%28b%29%29%29\".    <<<---=== It is the correct statement.\r\n" );
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