무제

1718 days 전, rladydwns1997 작성

var('n') sum((1+4^n)/(1+3^n), n, 1, oo) 
        
sum((4^n + 1)/(3^n + 1), n, 1, +Infinity)
sum((4^n + 1)/(3^n + 1), n, 1, +Infinity)