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向量空間 子空間證明題
Jun 4th 2013, 14:58

設 u = (2,0,3,-4) v = (4,2,-5,1)屬於 R^4 且令 W = {au+bv│a,b屬於R}

試證明 W為R^4的子空間

需要這題的證明

一直卡住的點在於 到底算出來怎樣 才算是 屬於R^4的子空間

看課本前面的幾題都是 類似 W = {a,b,1│a,b屬於R}

這種只要1+1為2 就非為子空間的

還麻煩高手解惑

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