how do u define your AX > B ? AX is a vector, B is also a vector
所在版块：求学狮城 发贴时间：2007-09-07 17:23

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you define AX>B as every element of A is greater than every element of B?

I don't think that's a good definition....
.
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请教一个简单的不等式问题 － 香陵居士 　2007-08-31 16:06 (518 bytes , 735reads )
2. － bugzzj 　2007-09-24 18:30 (77 bytes , 381reads )
1. － bugzzj 　2007-09-24 18:09 (76 bytes , 311reads )
please explain your notation － icky 　2007-08-31 17:53 (405 bytes , 306reads )
Sorry... so many typos... － 香陵居士 　2007-08-31 18:18 (276 bytes , 399reads )
I think the examples in 3 can still be treated as linear. － bugzzj 　2007-09-25 10:26 (236 bytes , 369reads )
i'm still confused － icky 　2007-09-06 12:40 (100 bytes , 320reads )
It simply says if each element of X is a function of variable t － 香陵居士 　2007-09-06 15:05 (46 bytes , 262reads )
this is not easy, even for linear function of t － icky 　2007-09-06 17:22 (66 bytes , 250reads )
i mean － icky 　2007-09-06 17:22 (68 bytes , 271reads )
I do understand what you mean but what's tricky here is that － 香陵居士 　2007-09-06 22:34 (120 bytes , 285reads )
if A is positive definite, then Ax > B eq to x > A^-1 B － icky 　2007-09-06 23:49 (0 bytes , 287reads )
... Can you prove that? － 香陵居士 　2007-09-07 02:00 (319 bytes , 267reads )
Thanks, but the most important thing is － 香陵居士 　2007-09-08 09:29 (173 bytes , 262reads )
aiyah.... － icky 　2007-09-08 01:40 (114 bytes , 249reads )
As I described － 香陵居士 　2007-09-08 00:19 (161 bytes , 272reads )
how do u define your AX > B ? AX is a vector, B is also a vector － icky 　2007-09-07 17:23 (117 bytes , 293reads )
oh, ok, you are saying vectors can not be compared directly － icky 　2007-09-07 12:38 (0 bytes , 265reads )