hello to all, i Would like to know why maxima doesn't integrate the following function. Thanks for your help a0:2/T*integrate(vi(t),t,-T/2,T/2); vi(t):=VAaux(t)+vb(t); VAaux(t):=if t<-T/2 then VAaux(t+T) elseif t<T/2 then va(t) else VAaux(t-T); vb(t):=1/4*cos(15*%pi*t)-1/8*sin(30*%pi*t);