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document.write( "If I'm reading what you wrote correctly, it's this\r\n" );
document.write( "\r\n" );
document.write( "If 

,
, then
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document.write( "The first part makes no sense because there is nothing given for x to approach\r\n" );
document.write( "in the limit. So I can only ignore that, and consider it as\r\n" );
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document.write( "If
, then
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document.write( "\r\n" );
document.write( "
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document.write( "\r\n" );
document.write( "
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document.write( "\r\n" );
document.write( "
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document.write( "\r\n" );
document.write( "



\r\n" );
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document.write( "Make a change of variable x+1=y, x=y-1\r\n" );
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document.write( "
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document.write( "\r\n" );
document.write( "
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document.write( "\r\n" );
document.write( "
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document.write( "\r\n" );
document.write( "



\r\n" );
document.write( "\r\n" );
document.write( "Edwin
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document.write( "