Journey into Complex Numbers
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Questions and Answers

Which of the following statements about complex numbers is true?

  • Complex numbers have both a real and imaginary part. (correct)
  • Complex numbers are only used in advanced mathematics.
  • Complex numbers can be represented as fractions.
  • Complex numbers can only be represented in polar form.

    • What is the conjugate of a complex number?

  • A complex number with its real and imaginary parts swapped.
  • A complex number with the sign of its imaginary part flipped. (correct)
  • A complex number with its imaginary part squared.
  • A complex number with its real part squared.

    • What is the square root of -1, also known as?

  • Negative unit
  • Fractional unit
  • Real unit
  • Imaginary unit (correct)

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