Question: If a two-dimensional rectangular crystal is bounded by sides of lengths 1 and 1 show by differentiation that the equilibrium shape is given by

If a two-dimensional rectangular crystal is bounded by sides of lengths 1 and 1 show by differentiation that the equilibrium shape is given by 1-12 1 71 where and 2 are the energies of the sides and respectively. (The area of the crystal 2 is constant.)

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