document.write( "Question 40982: ln(y-6)=ln(y+6)+ln4 \n" ); document.write( "
Algebra.Com's Answer #26421 by psbhowmick(878)![]() ![]() You can put this solution on YOUR website! ln(y-6) = ln(y+6) + ln4 \n" ); document.write( "or ln(y-6) - ln(y+6) = ln4 \n" ); document.write( "or \n" ); document.write( "Therefore \n" ); document.write( "or \n" ); document.write( "or \n" ); document.write( "or y = -10\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "This is impossible because then (y+6) and (y-6) become negative and logarithm of negative number is undefined. I think you have copied the problem wrongly. Instead of what you have written the question should be ln(y-6) = ln(y+6) - ln4. Then y = 10. \n" ); document.write( " |