1.

If `A=[{:(omega,0),(0,omega):}]`, where `omega` is cube root of unity, then what is `A^(100)` equal to ?A. AB. `-A`C. OD. none of these

Answer» Correct Answer - A
We have,
`A={:omega[(1,0),(0,1)]=omegaI_2:}`
`:. A^100=omega^100(I_2)^100=omega^100I_2=omegaI_2=A`.


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