Recent content by blue_m

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    Prove Symmetric Matrixes Thm: A=0 or Skew Symmetric

    I need to prove the following. 1. A is a symmetric matrix, and x(transpose)*A*x=0 for all x (belongs to R^n) if and only if A=0. 2. x(transpose)*A*x=0 for all x (belongs to R^n), if and only if A is skew symmetric.
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