Help with Piecewise function

[salvomic]

(02-01-2015 12:34 PM)Snorre Wrote:  ...
I think your function should look more like:

f(t):=piecewise(-π<t and t<0,-1, 0<t and t<π,1, 0)

Hi Snorre,
thank you.
I tried to do like you suggest:
f(t):=piecewise(-π<t AND t<0,-1, t=0, 0, 0<t AND t<π, 1)
If I, i.e., integrate the function I get [undef] after a warning "Piecewise definite integration: can only handle linear < or > condition"...
In other case it works: f(2) -> 1, f(-2) -> -1, f(4) -> "No case applies"

If I input exactly your formula I get t -> [ABS(π<t AND t<0,-1, 0<t AND t<π,1, 0]: perhaps the final 0 make the difference...

Regards
Salvo