Let Eki be the elementary matrix formed by subtracting times the ith row of the identity
Chapter 7, Problem 5(choose chapter or problem)
Let Eki be the elementary matrix formed by subtracting times the ith row of the identity matrix from the kth row. (a) Show that Eki = I ekeT i . (b) Let Eji = I ej eT i . Show that Eji Eki = I (ek + ej )eT i . (c) Show that E1 ki = I + ekeT i .
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