MULTIPLICITIES _ _ _ _ _ _ _ _ _ _ _ _ switch

When solve is applied to a set of equations with multiple r oots, solution multiplicities are normally stored in the global variable root_multiplicities rather than the solution list. If you want the multiplicities explicitly displayed, the switch multiplicities should be turned on. In this case, root_multiplicities has no value.

examples:

solve(x^2=2x-1,x); 

  X=1 


root_multiplicities; 

  2 


on multiplicities; 

solve(x^2=2x-1,x); 

  X=1,X=1 


root_multiplicities;