document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=489094>Question 489094</A>: <I><SPAN STYLE=\"word-break: break-all;\"> What is the difference between a common and natural logarithm and how do I change from one to the other? For example how would I write log5 91 in terms of common logarithms? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #334690 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=334690\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> What is the difference between a common and natural logarithm and how do I change from one to the other? For example how would I write log5 91 in terms of common logarithms?<BR>\n" );
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document.write( "The base of a common logarithm=10<BR>\n" );
document.write( "The base of a natural logarithm=e=2.7183...<BR>\n" );
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document.write( "To convert to a different base, take the log of the number with the new base divided by the log of the old base, based on the new base. For example:<BR>\n" );
document.write( "log5(9)=log10(9)/log10(5)=log(9)/log(5) </SPAN>\n" );
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