I realize that there is a small issue with maple. first I enter the following int(x^n,x) and I have the result x^(n+1)/(n+1) But this is correct only if I tell maple that n is not -1. Now I would that maple give a piecewise function as a solution to the above integral. Similarly, issue the command solve(sin(x)=0,x) and maple gives the answer 0. Well, that again is not right unless I specifically tell maple that I want my answer in [0,pi/2]. The same issue arises with other computations too. The CAS, Mupad 4.0 handles each of the above scenarios correctly.