Question

If z=a+ib and bar z=a-ib

Find |z| + |bar z|​

Answer 1

Answer: 2√(a² + b²)

Step-by-step explanation:

Hi, there bar Z simple means conjugate so conjugate of a + ib is a - ib. Where as |z| mathematically means the distance between origin and that complex number on Cartesian Plane.

|z| = √(a² + b²) where as |bar z| = √(a² + (-b)²) = √(a² + b²)

Hence |z| + |bar z| = 2√(a² + b²)

Happy Learning!

Answer 2

Answer:

$2 \sqrt{{a}^{2} \: + {b}^{2} }$

Refer the attachment for your answer.

I hope it helps

@ana205