MatLab

• Each "primitive" arithmetic value is a complex number, i.e., a pair of real numbers, known respectively as the real part and the imaginary part.

  >> sqrt(-2)
  
  ans =
  0 + 1.4142i

• A complex number with a zero imaginary part is displayed as a real number.

  >> sqrt(2)
  
  ans =
  1.4142

• A complex number with a zero imaginary part and an integral real part is displayed as an integer.

  >> sqrt(4)
  
  ans =
  2

• Operators: + - .* ./ .^ < <= > >= == ~= & | ~

• Example

  >> sqrt(-2) + sqrt(2)
  
  ans =
  1.4142 + 1.4142i

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