
Re: Strange result of solve
Posted:
Mar 11, 2014 3:35 AM


Hola:
> I cannot really understand the different results of the following:> > Solve[ 5 x == 0, x, Modulus> 5 ] > result: {{x> 0}} > > and: > > Solve[ 0 x == 0, x, Modulus> 5 ] > result: {{}} > > The last means that every x is OK. Which I think is true. But I would > expect the same result for the first case.
The result for the first case is the ring of integers.
Table[{x, Mod[5*x, 5]}, {x, 5, 5}]
{{5, 0}, {4, 0}, {3, 0}, {2, 0}, {1, 0}, {0, 0}= , {1, 0}, {2, 0}, {3, 0}, {4, 0}, {5, 0}}
Best regards,
MATTHIAS BODE.

