Question

How do you find `abs( -2-i )`?

Answer 1

`|-2-i|=2.236`

Explanation:

Finding `|-2-i|` means finding the modulus of complex number `-2-i`.

As modulus of a complex number `a+bi` is given by `sqrt(a^2+b^2)`

`|-2-i|=sqrt((-2)^2+(-1)^2)=sqrt(4+1)=sqrt5=2.236`