Maxima Function
min (x_1, ..., x_n)
Return a simplified value for the minimum of the expressions x_1 through x_n.
When get (trylevel, maxmin), is 2 or greater, min uses the simplification
min (e, -e) --> -|e|. When get (trylevel, maxmin) is 3 or greater, min tries
to eliminate expressions that are between two other arguments; for example,
min (x, 2*x, 3*x) --> min (x, 3*x). To set the value of trylevel to 2, use
put (trylevel, 2, maxmin).