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OpenStudy (anonymous):
Suppose AD=I_m (I_m is the m*m identity matrix). Show that for any b\vec in R^m, the equation Ax\vec=b\vec has a solution. Hint: Think about the equation ADb\vec=b\vec Explain why A cannot have more rows than columns.
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OpenStudy (anonymous):
I'm also having trouble writing the vector arrow over symbols in Equation mode. Any tips?
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