Question

How do you find `abs( 3-4i)`?

Answer 1

`|3-4i|=5`

Explanation:

Absolute value of a complex number `a+ib` is denoted as `|a+ib|`

and is given by `sqrt(a^2+b^2)`

Hence absolute value `|3-4i|` is

`sqrt(3^2+4^2)=sqrt(9+16)=sqrt25=5`