作者查詢 / akrsw
作者 akrsw 在 PTT [ Mathematica ] 看板的留言(推文), 共36則
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1F→: 4.0版雖然沒有Piecewise但可以用UnitStep,也可微分和積分04/12 14:02
1F→: SeriesCoefficient http://0rz.tw/hVl9110/09 10:37
1F→:(離題) 不知道是你寫錯還是我誤解了,若 x = r*Cos[t]^2,07/30 11:59
2F→:y = r*Sin[t]^2,則 x + y = 1 --> r = 1。07/30 12:00
3F→:我猜你的意思應該是(x,y)轉換成(r*Cos[t],r*Sin[t])吧?07/30 12:00
5F→:N1'和N2'有沒有改成N1'[t]和N2'[t]?07/08 10:48
6F→:發現你多了一個{}07/08 10:59
4F→:(有誤請指正)將mathematica的運算結果用Export存成CSV檔或02/28 16:47
5F→:TSV檔,這兩種檔案格式Excel都能辨認。02/28 16:48
2F→:(亂猜)也許是版本不同?10/15 12:18
5F→: http://0rz.tw/57HGE08/12 11:59
6F→:用 Unprotect[Out]; Out[n]=. 讓 MemoryInUse[] 下降。08/12 11:59
7F→:也許你可以試試看。08/12 11:59
5F→:因為是「兩本電子書」,所以是兩個網址,不用合起來。05/13 12:42
1F→:如果你只是想顛倒,可用Reverse。但我猜你應該是想玩 想練功03/30 10:28
1F→:我沒測試過,你自己試試看03/29 11:43
2F→: Nest[{{1, 1}, {-1, 1}}.# + {1,-1} &, {x0, y0}, 10]03/29 11:44