`simpalg'
---------

simpalg(RAT)
     :: LɊ܂܂㐔IȒP.

RETURN
     L
RAT
     L

   * `sp' Œ`Ă.
   * , , LɊ܂܂㐔I, ܂܂ `root' ̒`
     ɂȒP.
   * ̏ꍇ, ꂪΗL, ʂ `root' ̑ƂȂ.
   * ̏ꍇ, eWȒP.
   * L̏ꍇ, ꕪqƂĊȒP.

     [7] simpalg((1+A0)/(1-A0));
     simpalg undefined
     return to toplevel
     [7] load("sp")$
     [46] simpalg((1+A0)/(1-A0));
     (-2*#0-3)
     [47] simpalg((2-A0)/(2+A0)*x^2-1/(3+A0));
     (-2*#0+3)*x^2+(1/7*#0-3/7)
     [48] simpalg((x+1/(A0-1))/(x-1/(A0+1))); 
     (x+(#0+1))/(x+(-#0+1))

