If $z = i - 1$ , then $¯ z$ =

i + 1

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- i - 1

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- 1

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none of these

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Solution

The correct option is B $- i - 1$
If $z = a + i b$ then $¯ z = a - i b$ ( where $a$ and $b$ are real numbers )
Here,
$z = i - 1 = - 1 + i$

So, $¯ z = - 1 - i$

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