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Question
Let x, y ∈ R, then x + iy is a non-real complex number if ______.
Options
x = 0
y = 0
x ≠ 0
y ≠ 0
Solution
Let x, y ∈ R, then x + iy is a non-real complex number if y ≠ 0.
Explanation:
x + yi is a non-real complex number if y ≠ 0.
If x, y ∈ R.
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