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Mathematics
Which of the following represent correct form of set of complex numbers?
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Q. Which of the following represent correct form of set of complex numbers?
Complex Numbers and Quadratic Equations
A
$C=\{x+i y: x \in R, y \in R, i=\sqrt{-1}\}$
B
$C=\{x+i y: x \in R, y \in /\}$
C
$C=\{x+i y: x \in l, y \in l\}$
D
All of the above
Solution:
Set of complex numbers can be represented as
$ C=\{x+i y: x \in R, y \in R, i=\sqrt{-1}\} $
$C=\{x+i y: x, y \in R \text { and } i=\sqrt{-1}\}$