Question

How to find the absolute value of a complex number

Answer 1

A complex number is a number defined a
`a+bi` where
`a \ and \ b` are both real numbers and
`i` comes from the solution of the equation
`x^2=-1`. So the absolute value of a complex number is the distance between the origin
`(0,0)` and the point
`(a,b)` in the complex plane. So this can be expressed by the following formula:

`d=√(a^2+b^2)`

For instance, for the complex number
`3+4i`, the absolute value is:

`√(3^2+4^2)=5`