ST T. + n IT , = 4 ; n EN For n = 1 : T1 + 1 = T , + 1 ( substitute n = 1 ) T , = 4 + 1 = 5 ( T , = 4 given ) For n = 2 : T2 + 1 = T2 + 2 T , = 5 + 2 = 7 ...
確定! 回上一頁