"solve" and inequalities

Heikki Höijer shared this question 3 years ago
Needs Answer

CAS:

f(x) := x+1

solve(f(x)>0,x)

-> x>-1

Good!

CAS:

f(x):=if(x<0,x+1,x>=1,x+2)

solve(f(x)>0,x)

-> ?

Bad...

Why does the "good" work, but the "bad" does not work!

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