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Stationary Points and Minimum Surface Area

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A) Given the function z = x3 - 6xy +y3, find and classify the stationary points.
b) Show that the minimum surface area of a rectangular box (which has a top), of volume 8 cubic meters, is equal to 24 square meters.

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Stationary Points and Minimum Surface Area are investigated.

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c). z = 3x - 6 y = 0 so y = ½ *x ...

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