打LOL或玩遊戲時朋友最好不要在旁邊嘲笑，下場慘啊！ 


所謂打牌有牌品～玩遊戲也有遊戲品
大家玩遊戲不順的時候會有什麼反應呢？會摔手把嗎？會用鍵盤K朋友嗎？
就讓我們看看許多激動到需要上情緒管理課程的反應...
這．．．會不會太暴力了


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What is the equation of a 3D cone with generalised tilt?

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Relationship between determinant of matrix and determinant of adjoint?

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Clash Royale CLAN TAG #URR8PPP up vote 2 down vote favorite We are studying adjoints in class, and I was curious if there is a relationship between the determinant of matrix A, and the determinant of the adjoint of matrix A? I assume there would be a relationship because finding the adjoint requires creating a cofactor matrix and then transposing it. linear-algebra determinant adjoint-operators share | cite | improve this question asked Nov 17 '17 at 17:32 CluelessCoder 32 5 For a square matrix $A$ of order $n$, we have $A(operatornameadj A)=(operatornameadj A)A=|A|I_n$ where $I_n$ is the identity matrix of order $n$. This should tell you about the determinant of the adjoint in terms of that of $A$ (use multiplicative property and other elementary properties of determinants). – Prasun Biswas Nov 17 '17 at 17:35 1 @CluelessCoder: see here: math.stackexchange.com/questions/516127/…...
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Color the edges and diagonals of a regular polygon

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