1.

यदि `omega` इकाई का एक घनमूल है तो दर्शाइए कि `([(1,omega, omega^(2)),(omega, omega^(2),1),(omega^(2),1,omega)]+[(omega, omega^(2),1),(omega^(2),1,omega),(omega,omega^(2),1)])[(1),(omega),(omega^(2))]=[(0),(0),(0)]`

Answer» `([(1,omega, omega^(2)),(omega, omega^(2),1),(omega^(2),1,omega)]+[(omega, omega^(2),1),(omega^(2),1,omega),(omega,omega^(2),1)])[(1),(omega),(omega^(2))]`
`=[(1+omega, omega+omega^(2),omega^(2)+1),(omega+omega^(2),1+omega^(2),1+omega),(omega^(2)+omega,1+omega^(2),omega+1)[(1),(omega),(omega^(2))]`
`=[(1+omega+omega^(2)+omega^(3)+omega^(4)+omega^(2)),(omega+omega^(2)+omega^(3)+omega+omega^(2)+omega^(3)),(omega^(2)+omega+omega+omega^(3)+omega^(3)+omega^(2))]`
`=[(2(1+omega+omega^(2))),(2(1+omega+omega^(2))),(2(1+omega+omega^(2)))]=[(0),(0),(0)]`
`:’1+omega+omega^(2)=0]`


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