document.write( "Question 33246This question is from textbook College Algebra
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document.write( ": ln(x+1)=ln(3x+1) - lnx
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document.write( "solve exactly \n" );
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Algebra.Com's Answer #19629 by venugopalramana(3286)![]() ![]() You can put this solution on YOUR website! ln(x+1)=ln(3x+1) - lnx \n" ); document.write( "ln(x+1)=ln{(3x+1)/x}...taking antilogs \n" ); document.write( "x+1=(3x+1)/x \n" ); document.write( "x(x+1)=3x+1 \n" ); document.write( "x^2+x-3x-1=0 \n" ); document.write( "x^2-2x-1=0..using quadratic formula \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "x=1+sqrt.(2)....or......1-sqrt.(2)..but since logof negative number does not exist...1-sqrt.(2) cannot be a solution. \n" ); document.write( "so...x=1+sqrt.2=2.4142 \n" ); document.write( " |