I want to solve a big system of equations. There are 32 equations and 32 variables. Furthermaore there are a few restrictions to 8 of those variables, for example 0<t, t<1. I put the restrictions into the set of equations I want to solve. Normaly its works quite well, but today, one of the solutions was t=-2.0000000000. But this does not fit to the inequalitys I gave into the programm. Why is that? Is there a diffrence if I mark a set of inequalitys as restrictions and put them as a further property into the solve command comparded to use those inequalitys as additional equations?