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If z = x 2 xy + 8 y 2 and ( x , y ) changes from (2, 1) to (2.03, 0.95), compare the

If z = x² xy + 8y²and (x, y) changes from (2, 1) to (2.03, 0.95), compare the values of z and dz. (Round your answers to four decimal places.)

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