Let E be the 3 x 3 matrix that corresponds to the row operation R3 = R3 – 4R₁. (a) Find E-¹. (b) Find EA where A = = E-1. = -30 50 11 -3 -15 -2 : -28 34 15 EA= 1888 0 = -30 0 50 -15 0 0 -2

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