不定積分の ∫ 1 - sin²x dx = -1 - tanx

posted:ヌマゴン[lKsvH4n83nww10] 13/12/01 14:31:27
comment:
∫{1}over{sin^2 x}dx
newline ＝∫{(sin^2 x+cos^2 x)}over{sin^2 x} dx
newline ＝∫{sinx sinx+cosx cosx}over{sin^2 x} dx
newline ＝∫{-(cosx)'sinx+cosx(sinx)'}over{sin^2 x} dx
newline ＝-∫{(cosx)'sinx-cosx(sinx)'}over{sin^2 x} dx
newline ＝-∫({cosx}over{sinx})' dx
newline ＝-{cosx}over{sinx} +C
newline ＝-{1}over{tanx} +C

文にするとこんな感じ....


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Bulletin board

1：No name[cAv00G4eOaA.16] 13/12/01 16:06:39
理系なら常識

2：No name[K3V6HNTV4obT01] 13/12/01 16:27:18
分からなすぎて文字化けしてるのかと思った…

これ、高校でやるの？

3：本物[cTLFPoYYs7Vf01] 13/12/01 19:18:46
彼のクラスメイトです

数学教師の無茶ぶりで自分で調べろ言われまして…

な？偽物

4：ヌマゴン(偽者)[lKsvH4n83nww10] 13/12/02 11:58:13
な？と言われても困るんだが....
まあ、なんのためにUPしたのかと言うと
この公式をばら撒きまくって
間違っていたらだれかが訂正してくれるだろう。
という考えでUPしたので
常識と返って来るということは
この公式は正解ということですかね。

5：本物[cTLFPoYYs7Vf01] 13/12/02 12:35:57
正解なんかな？

6：georgia[jdewNEOF08zg16] 13/12/02 14:25:44
俺みたいなバカには暗号にしか見えない…

こんな数式見てたら眠くなる

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