作者nana0130 (小那)
看板Grad-ProbAsk
标题[问题] 93中央线代
时间Wed Mar 18 18:59:02 2009
you must have detailed explanation.
1. which of rotation, translation, scaling, and perpective projection
are linear transformation?
我只知道translation 不是,但我不懂原因及如何解释
2. what formulas will make the non-linear transforations into
matrix transformations?
不懂
3.When will you find the least-squares solution for Ax=b?
我认为是 A 有行独立时候
请问对吗 ?
感谢大家
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◆ From: 140.135.35.1
1F：→ ggLer:1的平移T(x)=x+a a不为零时就不是linear了 03/18 21:31
2F：→ ggLer:least square solution A是不是独立都可以求吧~~@@ 03/18 21:33
3F：→ nana0130:喔，那这样，不管怎样ax=b的least-square 都能有解啊 03/18 23:22
4F：推 epyon:3.应该是b向量不属於col(A)时 才需要用Les 来近似 03/19 14:01