document.write( "Question 331075: are there any 2 different numbers that when switched with exponents are the same? \n" ); document.write( "
Algebra.Com's Answer #237368 by Edwin McCravy(20060)\"\" \"About 
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are there any 2 different numbers that when switched with exponents are the same?
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document.write( "You are asking:\r\n" );
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document.write( "Are there any cases where \"A%5EB\"\"%22%22=%22%22\"\"B%5EA\" when A and B are\r\n" );
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document.write( "The first one that comes to mind is \r\n" );
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document.write( "\"2%5E4\"\"%22%22=%22%22\"\"4%5E2\"\r\n" );
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document.write( "because both sides equal 16.\r\n" );
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document.write( "Another case (using fractions) is \r\n" );
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document.write( "\"%289%2F4%29%5E%28%2827%2F8%29%29\"\"%22%22=%22%22\"\"%2827%2F8%29%5E%28%289%2F4%29%29\"\r\n" );
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document.write( "We prove that by proving that their logs are equal:\r\n" );
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document.write( "log of the left side\r\n" );
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document.write( "\"log%28%289%2F4%29%5E%28%2827%2F8%29%29%29\"\"%22%22=%22%22\"\"%2827%2F8%29log%289%2F4%29\"\"%22%22=%22%22\"\"%2827%2F8%29log%28%283%2F2%29%5E2%29\"\"%22%22=%22%22\"\"%2827%2F8%29%2A2%2Alog%28%283%2F2%29%29\"\"%22%22=%22%22\"\"%2827%2F4%29log%283%2F2%29\"\r\n" );
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document.write( "log of the right side\r\n" );
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document.write( "\"log%28%2827%2F8%29%5E%28%289%2F4%29%29%29\"\"%22%22=%22%22\"\"%289%2F4%29log%2827%2F8%29\"\"%22%22=%22%22\"\"%289%2F4%29log%28%283%2F2%29%5E3%29\"\"%22%22=%22%22\"\"%289%2F4%29%2A3%2Alog%28%283%2F2%29%29\"\"%22%22=%22%22\"\"%2827%2F4%29log%283%2F2%29\"\r\n" );
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document.write( "So \"%289%2F4%29%5E%28%2827%2F8%29%29\"\"%22%22=%22%22\"\"%2827%2F8%29%5E%28%289%2F4%29%29\"\r\n" );
document.write( "because the log of the left side equals the log of the right side.\r\n" );
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document.write( "Other solutions are:\r\n" );
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document.write( "\"%2864%2F27%29%5E%28%28256%2F81%29%29\"\"%22%22=%22%22\"\"%28256%2F81%29%5E%28%2864%2F27%29%29\"\r\n" );
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document.write( "\"%28625%2F256%29%5E%28%283125%2F1024%29%29\"\"%22%22=%22%22\"\"%283125%2F1024%29%5E%28%28625%2F256%29%29\"\r\n" );
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document.write( "You can generalize this to:\r\n" );
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document.write( "\"A=%28%28n%2B1%29%2Fn%29%5En\" and \"B=%28%28n%2B1%29%2Fn%29%5E%28n%2B1%29\"\r\n" );
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document.write( "then \"A%5EB\"\"%22%22=%22%22\"\"B%5EA\"\r\n" );
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document.write( "This can be proved the same way, by showing that the logs of the\r\n" );
document.write( "left and right sides are equal.\r\n" );
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document.write( "In fact the first solution mentioned above\r\n" );
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document.write( "\"2%5E4\"\"%22%22=%22%22\"\"4%5E2\"\r\n" );
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document.write( "is the case of this when n=1\r\n" );
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document.write( "Edwin
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