(b) Let 1 E₁ = -2 - 0 0 0 1 0 01 E₂ = 1 0 -3 Compute Y = E3E2E1 and its inverse Y-1. Compute Z = E1 E2 E3 and its inverse Z-¹. 00 10 0 1 E3 = 1 0 0 0 1 0 0-4 1

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