開學以來，一直都好得閒
借左幾本講Linear Algebra既書
係到學 Vector
一學就學 n-tuple vectors, linear span
dependent and independent vectors
scalar multiple and linear combination
dot product, 簡單既 Complex Vector......
呼，真係十分刺激，由幾乎零起步
好辛苦先睇清楚 length , absolute value 同dot product
再辛苦既就係 spanning set既vector有dependence/independence
由個set span 既vector又有dependence /independence( 視乎個set )
vector spanned by a set既linear combination 可以form一個matrix
an independence vector set S spans v uniquely iff it spans O uniquely...
仲要叫人prove佢......
仲有Gram-Schmidt Process
more and more...
嗚呀
可惜時間開始會越黎越少，Cross Product，再進階既Matrix就要遲下再學了
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