1.시그마1/n=(1+1/2)+(1/3+1/4).... 2.(1/4+1/4)+(1/8+1/8+1/8+1/8).... 1과2를비교해보면1의값이더큰데여2번은보시면1/2+1/2+..로발산
당신은 어느 그룹입니까?