b) A FCC lattice, with a conventional cell of side a, has primitive lattice vecto u=27 (ŷ+ê), α₂=⁄2 (2+î), a3=2/2(î+ŷ). Determine whether or not aí-(32+2), a=a(3£+ỷ+2) a=2(7â+3ŷ+22)
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