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Equation x^(n)-1=0,ngt1,ninN, has roots ...

Equation `x^(n)-1=0,ngt1,ninN,` has roots `1,a_(1),a_(2),...,a_(n),.`
The value of `underset(r=2)overset(n)sum(1)/(2-a_(r)),` is

A

`(n)/(4)`

B

`(n(n-1))/(2)`

C

`(n-1)/(2)`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
D
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