作者mdpming (阿阿 要加油)
看板Grad-ProbAsk
标题[理工] [线代]-基底变换
时间Sat Jan 30 16:04:33 2010
1.
α = { (1,-1) , (-2,3) }
β = { (1,1) . (0,1) }
2
be two bases for R and let A = [2 1]
[0 3]
2 2
be the matrix for T: R ------> R relative to α
<1> find transtion matrix p from β to α
T
<2> Using p and A find V and [T(V)] where V = (1,-3)
α α β
sol:
<1>
设题意之 p 为 change of coordinate matrix from β to α
另
U = [ 1 -2] , V = [1 0]
[-1 3] [1 1]
X = UX = VX
α β
....
....
<2>
另 TX = Y
X = UX , Y = UY
α α
.....
.....
这是笔记理的解答
像<2>小题我该如何判断 X = UX , Y = UY
α α
因为有些题目 Y = VY
β
要怎麽看 困扰我好久了...
2.
詹森 控制 p12-39 那一题 他给
1
G(S) = --- 有什麽用处 感觉没有用到也..
2
s
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1F：推 CRAZYAWIND:我资值太差了= = 我看不董你这个表达的意思 01/30 17:59
2F：推 CRAZYAWIND:有请i大出马 01/30 18:04
3F：推 ntust661:搞不懂你什麽试航矩阵还是列矩阵= = 01/30 18:04
4F：→ mdpming:...我打解答都照样打下来也... 01/30 18:20
5F：→ mdpming:死定了啦 这边很重要也 一定要弄懂..... 01/30 18:20
6F：推 CRAZYAWIND:X = UX α= VXβ 看不懂这是啥阿= =我课本上不是用这 01/30 18:23
7F：→ mdpming:是喔 还是你念积抵变换 有什麽心得@@ 01/30 18:24
8F：推 CRAZYAWIND:照样子排给他乘给他就好了阿= = 01/30 18:25
9F：→ mdpming:........ 01/30 18:42