I have some information but i do not know whether it is true or not .

  • the complex numbers used in
  • calculating the spread of germs
  • in census of population
  • in complex integrals
  • in engineering
  • in laser disks CD and hard disks industry ( in equation uncountable part with real number so we use imaginary part and if we reduce imaginary part the disk capacity will increase )
  • in signal processing ( have effective role in telephone technology , wireless connection ... etc
  • if there are more , tell me about it

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