Re: [請益] 有關矩陣的超基礎題....

看板Master_D作者gamer時間16年前 (2010/01/21 14:24)推噓1(1推 0噓 5→)

留言6則, 2人參與討論串2/2 (看更多)

※ 引述《ihtfjxj28 (阿斌)》之銘言： : : ∣ x ∣ ∣ cosθ -sinθ ∣ ∣ u ∣ : ∣ y ∣＝∣ sinθ cosθ ∣ ∣ v ∣ 　　let {A} = (x, y); {B} = (u, v); [Q] = (cosθ -sinθ,sinθ cosθ) -> {A} = [Q]{B} if [Q] have inv[Q], {B} = inv[Q]{A} because [Q] is orthonormality, inv[Q] = tr[Q] -> {A} = tr[Q]{B} : ∣ u ∣ ∣ cosθ sinθ ∣ ∣ x ∣ : ∣ v ∣＝∣-sinθ cosθ ∣ ∣ y ∣ -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 140.112.46.102

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ihtfjxj28

01/22 01:24, , 1^F

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ihtfjxj28

01/22 01:24, , 2^F

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gamer

01/22 03:21, , 3^F

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