Question

How do you simplify `abs( 2i)`?

Answer 1

`|2i|=2i`

Answer 2

`|2i|=2`

Explanation:

Absolute value of a complex number `a+bi` is written as `|a+bi|` and is equivalent to `sqrt(a^2+b^2)`

Hence `|2i|=|0+2i|=sqrt(0^2+2^2)=sqrt4=2`