(*^
::[ Information =
"This is a Mathematica Notebook file. It contains ASCII text, and can be
transferred by email, ftp, or other text-file transfer utility. It should
be read or edited using a copy of Mathematica or MathReader. If you
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into a plain text file. On some systems you may have to give the file a
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ClearAll; Clear[f,sf];
$DefaultFont = {"Times-Roman",10};
Needs["Graphics`Graphics`"];
upper = Plot[Log[x],{x,0.0001,20},AxesLabel->{" x","y"},
AxesOrigin->{0,0}, PlotRange->{{0,5.05},{-1.75,1.75}},
Ticks->{Automatic,Table[{0.5i-2,StringForm[" ``",0.5i-2]},{i,1,7}]},
PlotPoints->100,
PlotLabel->FontForm["y = F(x) = ln(x)",{"Courier",10}]];
lower = Plot[1/x,{x,0.0001,20},AxesLabel->{"x","y"},
AxesOrigin->{0,0}, PlotRange->{{0,5.05},{0,5}},
PlotPoints->100,
PlotLabel->FontForm["y = F'(x) = 1/x",{"Courier",10}]];
Show[GraphicsArray[{{upper},{lower}}],
PlotLabel->" Figure 22.1\n\n
The logarithm and its derivative"]
^*)