document.write( "Question 32906: (log v3 81)*(log v81 3)=1 I have not idea if this one is true or false. Any ideas? \n" ); document.write( "
Algebra.Com's Answer #19388 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Let x= log(base sqrt3) 81 \n" ); document.write( " Then (sqrt3)^x=81 \n" ); document.write( " (sqrt3)^x=3^4= (sqrt3)^8 \n" ); document.write( " Therefore x=8 \n" ); document.write( "Let y=log(base sqrt81) 3 \n" ); document.write( " then (sqrt81)^y=3 \n" ); document.write( " 9^y=3 \n" ); document.write( " Therefore y=1/2 \n" ); document.write( "Question now becomes; Does xy=1 ? \n" ); document.write( "Since 8(1/2) is not 1 the answer is \"FALSE\". \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |