For X = (x₁,...,xn), Y = (y₁, ..., Yn) € Rn, define n d(X,Y) := Σ |xi - vi| i=1 (a). Show that d is a metric on R". (b). Let de be the Euclidean metric on Rn. Find positive real numbers a, ß such that adE (X, Y) ≤d(X, Y) ≤ BdE (X, Y)

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