[理工] 103交大線代
想問這題的d
雖然版上有文章討論過很多次
但還是有些觀念不懂
1.為什麼解答是要使用(A^tA)^-1A^tb，而不是令Cs(A)為B矩陣，再用(B^tB)^-1B^tb解？
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討論串 (同標題文章)
