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わかったけど分からない
うわわわわ！！苦手で手もつけるのが嫌だった群数列が解けるようになりました！ありがとうございます😭
ありがとうございました😊
わかり易すぎて涙出てきた。
生まれてきてくれてありがとう…
俺みたいなバカでもわかるわ
この問題①では、群の初めの数=(群の数―1)を2の指数にすればよい。例えば3群の初めの数は2² 4群の初めの数=2³
すると7群の最初の数=2⁶=64 終わりの数=64+(64―1)=2⁷―1=127
簡単だと思いますが、如何ですか？
ぱっと見、絶対値
頑張って考えたけど、問題変わるとさっぱり
ありがとうございます🙇♀️
郡数と項数の一般項を求める
①郡の終わりの数→項数の和
郡の初めの数→項数-1の和+1
②第n郡の項数の和
郡の終わりの数-郡の初めの数
わかりやすいです感謝！
ガチでわかりやすいです
むりぜんぜんわからん
125項目ってなに？
学校では50分かけてもずっと？だった事を20分弱でめちゃくちゃ理解できるようになれる神動画
何時間も解説と睨めっこするよりハイチさんの動画見る方が効率的
葉一さんはなぁ、プロセスのひとつひとつの意味を伝えるのがうまいんだよなぁ。ここぞっという肝をビシッと掴むんだ。
1:20
わからん
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さっぱりわからん
12:25からの項数の話意味不明。。