part a 幾好玩 除咗本身有條GS
仲有arithmetico-geometric series
要識得將條AGS乘2再兩式相減
變番一條GS 唔知算唔算outsyl
:^(
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迎賓接福
2020-4-13 15:57:31
或者d咗佢都得
不過core走去d數...
:^(
銀影
2020-4-13 16:05:00
A part 都係兩溝
2+1=3
4+2=6
8+3=11
16+4=20
兩條general form合拼,不過唔知asgs兩溝算唔算out c
:^(
英雄見参
2020-4-13 16:10:17
混合版好似真係out c
不過我個時真係走左去學
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:^(
人見人憎
2020-4-13 16:14:48
:^(
或者就這樣吧
2020-4-13 16:16:20
如果比多啲guide我覺得可以
例如by expressing the difference of successive terms in the form of r^a+bd, where a b d r are positive integers
find t(n)
part a 幾好玩 除咗本身有條GS
仲有arithmetico-geometric series
要識得將條AGS乘2再兩式相減
變番一條GS 唔知算唔算outsyl