document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=4988>Question 4988</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Can you please explain how to this works out: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=log%282%2CX%29 ALIGN=MIDDLE  ALT=\"log%282%2CX%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >,<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=log%284%2CX%29 ALIGN=MIDDLE  ALT=\"log%284%2CX%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #2494 by </B><A HREF=/tutors/aboutme.mpl?userid=ichudov><B>ichudov(507)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ichudov><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=ichudov><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=2494\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Sure, say <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=X+=+4%5EY ALIGN=MIDDLE  ALT=\"X+=+4%5EY\"   DISABLED_style= \"max-width:90%; height:auto;\" > that means that <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=Y=log%28+4%2C+X+%29 ALIGN=MIDDLE  ALT=\"Y=log%28+4%2C+X+%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=X+=+4%5EY+=+%282%2A2%29%5EY+=+2%5EY%2A2%5EY ALIGN=MIDDLE  ALT=\"X+=+4%5EY+=+%282%2A2%29%5EY+=+2%5EY%2A2%5EY\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=X+=+2%5EY%2A2%5EY ALIGN=MIDDLE  ALT=\"X+=+2%5EY%2A2%5EY\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "take a log with base 2 of the right part of the formula above\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=log%28+2%2C+X+%29+=+log%28+2%2C+2%5EY%2A2%2AY%29+%0D%0A=+log%28+2%2C+2%5EY%29+%2B+log%28+2%2C+2%5EY%29+%0D%0A=+2%2Alog%28+2%2C+2%5EY+%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Since <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=log%28+2%2C+2%5EY+%29 ALIGN=MIDDLE  ALT=\"log%28+2%2C+2%5EY+%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > is Y, we have\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=log%28+2%2C+X+%29+=+2Y ALIGN=MIDDLE  ALT=\"log%28+2%2C+X+%29+=+2Y\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Y, as we know is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=log%28+4%2C+X+%29 ALIGN=MIDDLE  ALT=\"log%28+4%2C+X+%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >, so \r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=log%28+2%2C+X+%29+=+2%2Alog%28+4%2C+X+%29 ALIGN=MIDDLE  ALT=\"log%28+2%2C+X+%29+=+2%2Alog%28+4%2C+X+%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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