[CAS] find domain for function?

[teerasak]

Perhaps with past release of firmware, it could not do so.

With the latest release (2018 10 16), I found domain command which can be used to find domain:

For example, to find domain of f(x) = 1/(x-1), simply use:
domain(1/(x-1),x)
it will return x<>1

I'm just thinking howto find range of this function. Perhaps the following command can help:

domain(solve(y=1/(x-1),x),y)
it will return y<>0