作者查詢 / lenux
作者 lenux 在 PTT [ Math ] 看板的留言(推文), 共91則
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2F推:母體標準差已知用z 未知又小樣本用t03/20 12:34
13F推:你去用交大的開放式課程上課好嗎 不然頭痛醫頭02/23 14:31
14F→:交大開始式課程有微積分 上完再做題目02/23 14:32
1F→:看不懂上下標在寫什麼......02/16 22:02
9F推:線獨的定義是c1v1+c2v2+...=0的常數iff=0 如果是{0}01/31 12:51
10F→:不管常數是什麼等式都成立 所以就不線獨了 因此不會01/31 12:52
11F→:有基底01/31 12:52
15F→:打太快抱歉XDD01/31 16:40
2F推:求解Homogenous System 不過這種資料會缺秩 無法求11/26 00:24
3F→:唯一解 建議去翻多變量分析的書來看怎麼處理11/26 00:24
1F推:列秩是列空間基底的維度 行秩則是行空間基底維度11/04 21:29
2F→:兩者必相等 才會有RANK 這個定義11/04 21:29
3F推:T:V→W, V is 1 to 1 iff ker(T)=0,11/04 22:19
4F→:dimV=dim(Ker)+dim(Range) 前提是要dimV=dimW才會同11/04 22:20
5F→:時在Nonsingular的狀況下成立1 to 1 & onto11/04 22:20
6F→:因為dim(Ker)=0就滿足dim(Range)=dimV=onto11/04 22:21
2F→:row4還可以化簡 把1消掉後看右邊的b再來討論三種解10/29 18:22
3F→:看無解/一組解/無限多解時 b分別要等於什麼才成立10/29 18:23
6F推:科大什麼系?商管的話通常三角函數微積分不會教06/07 13:59
7F→:然後我覺得怎麼解題還有可以怎麼應用應該會比較有趣06/07 14:00
13F→:可是原文書有寫等號永遠在H0 我覺得把握這原則就ok05/31 23:41
7F推:覺得高中數學比微積分線代統計還難05/28 12:57