If the conjugate of (x+iy)(1-2i) be 1+i, then

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Solution

The correct option is C

Given that $¯ ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯ ¯ (x + i y) (1 - 2 i)$ = 1+i

⇒ x-iy = $\frac{1 + i}{1 + 2 i} \Rightarrow x + i y = \frac{1 - i}{1 - 2 i}$ .

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Similar questions

If the conjugate of (x+iy)(1-2i) is 1+i , then

x

y

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- 3 - 2 i

z_{1} = 1 + 2 i

z_{2} = 2 + 5 i

z_{1} + z_{2}

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