@image html step-8.vectors.png
-You can clearly see the sources of x-displacement around x=0.5 and
-x=-0.5, and of y-displacement at the origin. In this example, we have
+You can clearly see the sources of $x$-displacement around $x=0.5$ and
+$x=-0.5$, and of $y$-displacement at the origin. In this example, we have
used the GMV program to produce a vector plot by telling it that the
-two solution components, x-displacement and y-displacement, are in
+two solution components, $x$-displacement and $y$-displacement, are in
fact not two independent scalar fields, but the components of a vector
field. Depending on what graphical file format we use, we could as
well have specified this in the program already and then written into
-Finally, the x-displacement and y-displacement are displayed separately:
+Finally, the $x$-displacement and $y$-displacement are displayed separately:
It should be noted that intuitively one would have expected the
-solution to be symmetric about the x- and y-axes since the x- and
-y-forces are symmetric with respect to these axes. However, the force
+solution to be symmetric about the $x$- and $y$-axes since the $x$- and
+$y$-forces are symmetric with respect to these axes. However, the force
considered as a vector is not symmetric and consequently neither is
the solution.