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Questions and Answers
What is the square of the imaginary unit $i$?
What is the square of the imaginary unit $i$?
- $-1$ (correct)
- $-i$
- $i$
- $1$
Which of the following represents the complex conjugate of the complex number $3 + 4i$?
Which of the following represents the complex conjugate of the complex number $3 + 4i$?
- $3 + 4i$
- $-3 + 4i$
- $3 - 4i$ (correct)
- $-3 - 4i$
What is the product of the complex numbers $(1 + i)$ and $(2 - i)$?
What is the product of the complex numbers $(1 + i)$ and $(2 - i)$?
- $3 + 3i$
- $3 - i$
- $3 - 3i$ (correct)
- $3 + i$
What is the absolute value of the complex number $2 - 2i$?
What is the absolute value of the complex number $2 - 2i$?
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