          Easy things to code in Mathomatic that might be good ideas
          ----------------------------------------------------------

Add fractional integration to the integrate command.  When "order" is negative,
it will naturally do fractional differentiation.

Add "combine variable" command that combines all stored equations and solves
for the specified variable.  First, the equation containing the variable must
be found and made the current equation.  This is done by searching backwards,
starting at the current equation.  Then something similar to a repeated
"eliminate all" (excepting the specified variable), that doesn't re-use
equations, is done with the current equation.  Lastly, solve for the variable
and display.

Simplify nested radicals like ((9 + 4*(2^.5))^.5) to (1 + 2*(2^.5)).  This may
be difficult, I have no idea how this is done.  Heuristics are not acceptable
for this.

Add double factorial (x!!), triple factorial (x!!!), and so on, to be
completely multifactorial capable.  The type of factorial would be stored in
the dummy operand: 1.0 for normal factorial, 2.0 for double factorial, etc.
