rr={}; For[a = 2, a < 6, a++, For[b = 2, b < 6, b++, rr = Appendto[rr, a^b]]] rr

Paolo cachecho a écrit : > hello i am new to mathmatica.i have the following problem if anyone could help. > > For[a = 2, a < 6, a++, > For[b = 2, b < 6, b++, > Appendto[rr = {}, a^b]]] > rr > > but rr remains empty. how can i solve this > thank you > > >