Code : Tout sélectionner
(x == 0 and 1 < y and 0 != 0) or (x == 0 and y < 0 and 0 != 0)
I have had a look at the pdf manual, but did not get it.
The following does not work:
Code : Tout sélectionner
giac: simplify((x == 0 and 1 < y and 0 != 0) or (x == 0 and y < 0 and 0 != 0))
0
giac: solve((x == 0 and 1 < y and 0 != 0) or (x == 0 and y < 0 and 0 != 0),[x,y])
NaN