Let A ∈ Rm×n, B ∈ Rn×r, and x, y ∈ Rn. Supposethat the product AxyTB is computed in the followingways:(i) (A(xyT ))B (ii) (Ax)(yTB)(iii) ((Ax)yT )B Compare the number of scalar additions and multiplications for each of the three methods when m = 5, n = 4, and r = 3. Which method is most efficient in this case?

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