how that the elements on the main diagonal of a skew symmetric matrix are alzero.2. If a matrix A is symmetric as well as skew symmetric, then A -o3. If A and B are symmetric matrices of the same order, then show that AB issymmetric if and only if A and B commute, that is AB BA.

how that the elements on the main diagonal of a skew symmetric matrix

1.	how that the elements on the main diagonal of a skew symmetric matrix are alzero.2. If a matrix A is symmetric as well as skew symmetric, then A -o3. If A and B are symmetric matrices of the same order, then show that AB issymmetric if and only if A and B commute, that is AB BA.
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