[理工] [線代]
1. find all 2x2 matrices whose nullspace is the line 3x-5y = 0
1
2.<f,g> = ∫f(x)g(x)dx
0
let S1 be the subspace spanned by vector 1.Let s be the subspace
spaned by vector 1 and 2x-1
Find a function y from the subspace S1 s.t. ||y-x^(1/2)||
is minimal.
===========================分隔線============================
1.這題為什麼要用到正交補集的觀念
我求出null(A)以為做完 卻發現答案是 A = [3a -5a] ; a,b 不同時為0
[3b -5b]
2.找function y要從哪裡下手? 這邊的minimal怎麼翻會比較好?
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 220.129.32.242
推
08/24 01:05, , 1F
08/24 01:05, 1F
→
08/24 01:05, , 2F
08/24 01:05, 2F
→
08/24 01:08, , 3F
08/24 01:08, 3F
→
08/24 01:08, , 4F
08/24 01:08, 4F
→
08/24 01:09, , 5F
08/24 01:09, 5F
推
08/24 01:44, , 6F
08/24 01:44, 6F
→
08/24 01:45, , 7F
08/24 01:45, 7F
→
08/24 17:05, , 8F
08/24 17:05, 8F
→
08/24 17:06, , 9F
08/24 17:06, 9F
→
08/24 19:23, , 10F
08/24 19:23, 10F
→
08/24 19:25, , 11F
08/24 19:25, 11F
→
08/24 19:29, , 12F
08/24 19:29, 12F
→
09/11 14:29, , 13F
09/11 14:29, 13F
討論串 (同標題文章)