anthonyhill49 anthonyhill49
  • 31-08-2021
  • Mathematics
contestada

If the modulus of the complex number a + bi equals a, then we KNOW that

Respuesta :

jimrgrant1 jimrgrant1
  • 31-08-2021

Answer:

b = 0

Step-by-step explanation:

The modulus of a + bi is

| a + bi | = [tex]\sqrt{a^2+b^2}[/tex] , then

[tex]\sqrt{a^2+b^2}[/tex] = a ( square both sides )

a² + b² = a² ( subtract a² from both sides )

b² = 0 ⇒ b = 0

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