#!/usr/bin/env ruby
# This code comes from http://ruby-it.org/pages/Numeri+Complessi
# Check the page for copyright notice and explanations



 >> require 'complex'
 => true
 >> a=Complex.new 10, 20
 => Complex(10, 20)
 >> a+ 15
 => Complex(25, 20)
 >> 10+a
 => Complex(20, 20)

 >> Complex.polar 100, 45 #raggio, gradi
 => Complex(52.532198881773, 85.0903524534118)

 >> Math.sqrt 10
 => 3.16227766016838
 >> require 'complex'
 => true
 >> Math.sqrt( Complex.new(1,2))
 => Complex(1.27201964951407, 0.786151377757423)
 >> Math.sqrt 10
 => 3.16227766016838

 >> require 'complex'
 => true
 >> require 'yaml'
 => true
 >> Complex(1,2).to_yaml
 => "--- 1+2i"