document.write( "Question 532973: Please help, I'm confused on this problem.\r
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document.write( "log(base2)x = log(base4)(2x-1) \r
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document.write( "Solve for x.\r
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document.write( "Thanks. \n" );
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Algebra.Com's Answer #350995 by lwsshak3(11628)![]() ![]() ![]() You can put this solution on YOUR website! Please help, I'm confused on this problem. \n" ); document.write( "log(base2)x = log(base4)(2x-1) \n" ); document.write( "Solve for x. \n" ); document.write( "** \n" ); document.write( "log(base2)x = log(base4)(2x-1) \n" ); document.write( "change to a common base(2) \n" ); document.write( "log of the number with the new base(2) divided by log of the old base(4) with the new base(2). \n" ); document.write( "log2(x)=log2(2x-1)/log2(4) \n" ); document.write( "log2(4)=2 \n" ); document.write( "log2(x)=log2(2x-1)/2 \n" ); document.write( "2log2(x)-log2(2x-1)=0 \n" ); document.write( "log2(x^2)-log2(2x-1)=0 \n" ); document.write( "place under single log \n" ); document.write( "log2[(x^2)/(2x-1)]=0 \n" ); document.write( "convert to exponential form: base(2) raised to log of number(0)=number(x^2)/(2x-1) \n" ); document.write( "2^0=(x^2)/(2x-1)=1 \n" ); document.write( "x^2=2x-1 \n" ); document.write( "x^2-2x+1=0 \n" ); document.write( "(x-1)^2=0 \n" ); document.write( "x=1 (multiplicity 2) \n" ); document.write( " |