4-1.Complex numbers
easy

$1 - i$ ની વિરોધી સંખ્યા મેળવો.

A

$0 + 0i$

B

$ - 1 - i$

C

$ - 1 + i$

D

એકપણ નહીં.

Solution

(c) If $z = x + iy$ is the additive inverse of $1 – i$then $(x + iy) + (1 – i) = 0$ 

==> $x + 1 = 0$, $y – 1 = 0$

==> $x = – 1$, $y = 1$

$\therefore $ The additive inverse of $1 – i$is $z = – 1 + i$

Trick : Since $(1 – i) + ( – 1 + i) = 0$.

Standard 11
Mathematics

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