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作者 sherees 在 PTT [ Math ] 看板的留言(推文), 共28則
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4F→: 你有先把書看完動腦想過嗎= =06/06 19:10
1F推: 可以算1/4圓 重積分02/17 12:08
2F推: 或積(r2-x2)^0.5 0~r02/17 12:11
6F推: 3^x+3^y=a , 同乘3^x , (3^x)^2-a(3^x)+3=0 , X=3^01/18 17:44
7F→: x , X^2-aX+3=0 , 方程式有解,判別式>001/18 17:44
8F推: x為正數X>1 , [a-+(a^2-12)^0.5]>101/18 17:49
9F→: 上面推錯 要除2 總之就是公式解01/18 17:51
10F推: 當然這題代邊界就知道上限=401/18 17:52
3F推: 會寫程式嗎? 這就最小平方法01/07 19:52
5F推: 離群值?12/23 11:08
6F推: limit(x->0)[(x+x^2)/x]你會怎麼做?12/23 00:43
7F→: 想想就知道為什麼高次項=0了12/23 00:44
53F推: 建議別辦 玩家本金夠大一定是賠的 要是來個連10頭12/23 00:49
54F→: 的你們打算怎麼辦 照給錢嗎?12/23 00:49
1F推: shift mode 4 tan alpha ) ) alpha calc alpha )11/13 17:46
2F→: shift calc 起始值 =11/13 17:47
3F→: 你要的解應該是4.493 起始值從4開始吧11/13 17:50
4F→: 因為也有可能疊代出x=011/13 17:51