Question

The conjugate of a complex number is $\frac{1}{i-1}$ then that complex number is
(a) $\frac{-1}{i-1}$
(b) $\frac{1}{i+1}$
(c) $\frac{-1}{i+1}$
(d) $\frac{1}{i-1}$

Answer 1

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