RetractSolvePackage is an interface to SystemSolvePackage that attempts to retract the coefficients of the equations before solving.
- solveRetract: (List Polynomial R, List Symbol) -> List List Equation Fraction Polynomial R
solveRetract(lp, lv)finds the solutions of the list
lpof rational functions with respect to the list of symbols
lv. The function tries to retract all the coefficients of the equations to
Qbefore solving if possible.