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If A=[a b0a] is nth root of I2, then cho...

If `A=[a b0a]` is nth root of `I_2,` then choose the correct statements: If `n` is odd, `a=1,b=0` If `n` is odd, `a=-1,b=0` If `n` is even, `a=1,b=0` If `n` is even, `a=-1,b=0` a. i, ii, iii, iv b. ii, iii, iv c. i, ii, iii, iv d. i, iii, iv

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