>>>>> "Witold" == Witold E Wolski <Witold> writes: Witold> I want to integrate Witold> integrate(c*x^k,x); Witold> Maxima asks Is? k + 1? zero or nonzero? Witold> So I would like to tell that k>1. assume(k>1); integrate(c*x^k,x); c*x^(k+1)/(k+1) Ray