actually what is complex number....(adsbygoogle = window.adsbygoogle || []).push({});

i know it's root of the -1

but how can we imagine the kind of number exist??

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# What is complex number

**Physics Forums | Science Articles, Homework Help, Discussion**