利用數學歸納法,證明對於所有正正數n,下列各命題都成立!
1 1 1
-----+-----+-----+....... 1.3.5 3.5.7 5.7.9
1 n(n+2)
+--------- = -------
(2n-1)(2n+1)(2n+3) 3(2n+1)(2n+3)
呢課係數學歸納法
做得詳細d,,十萬個唔該晒!!
更新1:
1 1 1 1 n(n+2) _________+________+________+________________ = ____________ 1X3X5 3X5X7 5X7X9 (2n-1)(2n+1)(2n+3) 3(2n+1)(2n+3) 睇呢到睇得清楚d