if A is a mxm symmetric matrix such that a'A=0, where a' is a mx1 vector. Show that a'A-=0, where A- is a Moore-Penrose

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answerhappygod
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if A is a mxm symmetric matrix such that a'A=0, where a' is a mx1 vector. Show that a'A-=0, where A- is a Moore-Penrose

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if A is a mxm symmetric matrix such that a'A=0, where
a' is a mx1 vector. Show that a'A-=0, where
A- is a Moore-Penrose inverse.
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