B.Sc Method Chapter 1 (Complex Numbers) Notes

Mathematical Methods (B.Sc.)

Chapter:01 (Complex Numbers)

In this chapter, we will study the following topics:

  • equality of complex numbers
  • properties of complex numbers
  • associative law of addition
  • properties of multiplications
  • multiplicative identity
  • distributive law
  • left and right distributive laws
  • representationa of complex number
  • argand’s diagram
  • modulus of z
  • represtation of argand’s diagram
  • imaginary axis
  • trigonometric or polar form of a complex number
  • principal argument
  • product and quotient of a complex number in polar form
  • modulus and argument of given number
  • locus of a complex number
  • de moivre’s theorem
  • applications of de moivre’s theorem
  • roots of a complex number
  • the principal nth root
  • basic elementary functions
  • euler’s identity
  • euler’s formula
  • trigonometric functions
  • hyperbolic functions
  • relationships between trigonometric and hyperbolic functions
  • branch of logarithm
  • principal algorithm
  • inverse hyperbolic functions
  • inverse trigonometric functions
  • complex power
  • the principal value of a complex power
  • summation of series
  • sum of infinite series

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