\r\n" );
document.write( "There is no way to use methods of algebra to solve an equation for \r\n" );
document.write( "an unknown that appears both inside and outside of a logarithmic, \r\n" );
document.write( "exponential, or trigonometric function. The only way is to \r\n" );
document.write( "approximate it with a computer, calculator, or iterative method \r\n" );
document.write( "(\"educated\" trial and error).\r\n" );
document.write( "\r\n" );
document.write( "Perhaps you did not mean to have \" x= \" in the front as if it were\r\n" );
document.write( "part of the equation, and meant only this equation:\r\n" );
document.write( "\r\n" );
document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "Let's convert one of the logs so we will have both logs to the same \r\n" );
document.write( "base.\r\n" );
document.write( "\r\n" );
document.write( "I choose to convert 
to base 2.\r\n" );
document.write( "\r\n" );
document.write( "You should memorize the change of base formula:\r\n" );
document.write( "\r\n" );
document.write( " 
\r\n" );
document.write( "\r\n" );
document.write( "and plug in a=x, b=8, c=2\r\n" );
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document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "So substitute 
for in\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "Multiply through by 3\r\n" );
document.write( "\r\n" );
document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "
\r\n" );
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document.write( "By the definition of logarithms, from the above equation,\r\n" );
document.write( "we have this:\r\n" );
document.write( "\r\n" );
document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "(You fill in those blanks, the first one with an \r\n" );
document.write( "eponential expression and the second with a number.\r\n" );
document.write( "\r\n" );
document.write( "Edwin
\n" );
document.write( "![\"\"](\"/images/stars/stars-13.gif\")
