[線代] dim問題
如題~ A矩陣的dim 是4
根據dim thm
dim(A) =rank(A)+ nullity(A)
可是我rank (A)找出來是2
R(A) = [ (111) (120)]
可是nullity(A) 找出來就 (-2 1 1)這個
這樣nullity 會是2嗎
覺的是不是我哪裡觀念錯了...
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