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Complex variables

  • Complex variables are used to solve complicated Integrals.
  • A complex variable is denoted by z and is written as x+iy.
    z = x + iy and i=√-1
  • If f(z) is  a function of complex variable and is denoted by w. Then
    w = f(z)
    w = u + iv
    where u and v are real and imaginary parts of f(z).