document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=439520>Question 439520</A>: <I><SPAN STYLE=\"word-break: break-all;\"> hello. i need help with these few problems. <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+log+%28+2%2C+25+%29+ ALIGN=MIDDLE  ALT=\"+log+%28+2%2C+25+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+log+%28+2%2C+3%2F5+%29+ ALIGN=MIDDLE  ALT=\"+log+%28+2%2C+3%2F5+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+log+%28+2%2C+15+%29+ ALIGN=MIDDLE  ALT=\"+log+%28+2%2C+15+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+log+%28+2%2C+75+%29+ ALIGN=MIDDLE  ALT=\"+log+%28+2%2C+75+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > i just dont know how to approach these. Thanks  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #303740 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=303740\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> log ( 2, 25 ) }}} and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+log+%28+2%2C+3%2F5+%29+ ALIGN=MIDDLE  ALT=\"+log+%28+2%2C+3%2F5+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+log+%28+2%2C+15+%29+ ALIGN=MIDDLE  ALT=\"+log+%28+2%2C+15+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+log+%28+2%2C+75+%29+ ALIGN=MIDDLE  ALT=\"+log+%28+2%2C+75+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "-------------<BR>\n" );
document.write( "There is a Law of Logs called the change of base law.<BR>\n" );
document.write( "It says: loga(b) = logc(b)/logc(a)<BR>\n" );
document.write( "where c is any base you care to use.<BR>\n" );
document.write( "-----------------------------------------<BR>\n" );
document.write( "Your problem:<BR>\n" );
document.write( "log2(25) = log(25)/log(2) = 1.3979/0.3010 = 4.644<BR>\n" );
document.write( "================<BR>\n" );
document.write( "Using your calculator:<BR>\n" );
document.write( "log2(3/5) = log(3/5)/log(2) = -0.7370<BR>\n" );
document.write( "---<BR>\n" );
document.write( "log2(75) = log(75)/log(2) = 6.2288<BR>\n" );
document.write( "=======================================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. <BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );