On 08/28/2013 01:29 PM, Wilhelm Haager wrote: > > (%i1) integrate(sin(omega*t)*exp(-s*t),t,0,inf); > Is s positive, negative or zero? > > An answer is not accepted (neither n, nor z, nor p). > The old Maxima version 5.27.0 works fine. It accepts the answer but it asks 5 times and you have to provide it obediently :)