document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=535345>Question 535345</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hello everyone! I need help with logarithmic functions please! This is a hard topic for me and could use all the help I can.<BR>\n" );
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document.write( "Find the domain of the logarithmic function..\r<BR>\n" );
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document.write( "f(x)= log(x^2-17x+72) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #351864 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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/cgi-bin/show-face.mpl?user=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=351864\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+f%28x%29=+log%28%28x%5E2-17x%2B72%29%29+ ALIGN=MIDDLE  ALT=\"+f%28x%29=+log%28%28x%5E2-17x%2B72%29%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "\" logs are exponents \" That's worth repeating.<BR>\n" );
document.write( "It's important how you read this equation.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x%5E2-17x%2B72+ ALIGN=MIDDLE  ALT=\"+x%5E2-17x%2B72+\"   DISABLED_style= \"max-width:90%; height:auto;\" > is what I get when I <BR>\n" );
document.write( "raise <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=10 ALIGN=MIDDLE  ALT=\"10\"   DISABLED_style= \"max-width:90%; height:auto;\" > to the exponent <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+f%28x%29+ ALIGN=MIDDLE  ALT=\"+f%28x%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "The thing to see here is that there is no way<BR>\n" );
document.write( "you can end up with a negative by raising<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=10 ALIGN=MIDDLE  ALT=\"10\"   DISABLED_style= \"max-width:90%; height:auto;\" > to some power like <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+f%28x%29+ ALIGN=MIDDLE  ALT=\"+f%28x%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "so,  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x%5E2-17x%2B72+ ALIGN=MIDDLE  ALT=\"+x%5E2-17x%2B72+\"   DISABLED_style= \"max-width:90%; height:auto;\" > can't be negative.<BR>\n" );
document.write( "But, the log of this can be negative, <BR>\n" );
document.write( "positive or zero<BR>\n" );
document.write( "the domain is<BR>\n" );
document.write( "- infinity < f(x) < + infinity </SPAN>\n" );
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