document.write( "Question 47490: log2 18+log2 x-log2 3
\n" );
document.write( "the twos are lowercase i am having a hard time doing these problems.\r
\n" );
document.write( "\n" );
document.write( "log2 x+log2(x+3)-log2x^2\r
\n" );
document.write( "\n" );
document.write( "solve x: -5=log2x\r
\n" );
document.write( "\n" );
document.write( "e^5x+1=40 solve\r
\n" );
document.write( "\n" );
document.write( "7log+log2 32\r
\n" );
document.write( "\n" );
document.write( "if f(x)=log2x find f(16)\r
\n" );
document.write( "\n" );
document.write( "I have over a hundred problems like these for an exam if i can get someone to show me how to do this by monday will be great\r
\n" );
document.write( "\n" );
document.write( "thank you \n" );
document.write( "
Algebra.Com's Answer #31347 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! \n" ); document.write( "log2 x+log2(x+3)-log2x^2 \n" ); document.write( "Using the log laws you can rewrite this expression as: \n" ); document.write( "log[x*(x+3)/x^2 \n" ); document.write( "=log2 [(x^2+3x)/x^2] \n" ); document.write( "--------------------------- \n" ); document.write( "solve x: -5=log2x \n" ); document.write( "2^(-5)=x \n" ); document.write( "x=1/32 \n" ); document.write( "---------------------------- \n" ); document.write( " \n" ); document.write( "e^5x+1=40 solve \n" ); document.write( "e^(5x+1)=40 \n" ); document.write( "Take the natural log of both sides to get: \n" ); document.write( "5x+1 = ln40 \n" ); document.write( "5x+1 = 3.68887945... \n" ); document.write( "5x=2.68887945... \n" ); document.write( "x=0.53777589... \n" ); document.write( "---------------------------- \n" ); document.write( "7log+log2 32 \n" ); document.write( "This problem is garbled \n" ); document.write( "----------------------------- \n" ); document.write( "if f(x)=log2x find f(16) \n" ); document.write( "f(16)=log2 16 = 4 \n" ); document.write( "----------------------- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " \n" ); document.write( " |