Complex numbers

[Emultra]

What's the best resource for learning how to solve stuff like z^4 = -1? And polar/rectangular form.

 

[JPS35]

http://www.khanacademy.org/

 

[TecHNooB]

ask on atot

 

[T_Yamamoto]

Wolframaplha

 

[brianmanahan]

study your calc 2 instead of posting on atot

 

[Fenixgoon]

take a complex variables class. you go through the derivation of the complex system, complex functions, complex integrals, etc.

interesting stuff.

 

[brianmanahan]

take a complex variables class. you go through the derivation of the complex system, complex functions, complex integrals, etc.

interesting stuff.

it's simple, just think 2dimensions, theres nothing more to it than that really

 

[BladeVenom]

study your calc 2 instead of posting on atot

I learned complex number in algebra.

 

[brianmanahan]

I learned complex number in algebra.

csb

 

[Fenixgoon]

it's simple, just think 2dimensions, theres nothing more to it than that really

integration of complex functions is different (everything is a line integral), but i always treated it like a regular integral anyway

 

[Sureshot324]

Can anyone explain what the actual point of complex numbers is? I remember asking my high school math teacher this and getting a vague answer.

 

[paulney]

Can anyone explain what the actual point of complex numbers is? I remember asking my high school math teacher this and getting a vague answer.

One immediate application that comes to mind is Fourier transformations for signal analysis.

 

[brianmanahan]

One immediate application that comes to mind is Fourier transformations for signal analysis.

fft ftw

 

[Sureshot324]

One immediate application that comes to mind is Fourier transformations for signal analysis.

Any chance you can explain why the square root of negative 1 is necessary for this?

 

[veri745]

Any chance you can explain why the square root of negative 1 is necessary for this?

http://en.wikipedia.org/wiki/Complex_number#Applications

 

[TecHNooB]

Any chance you can explain why the square root of negative 1 is necessary for this?

it's a long story.

 

[MrColin]

What's the best resource for learning how to solve stuff like z^4 = -1? And polar/rectangular form.

High School, maybe middle school, depending on what part of the country you live in assuming the US. Also assuming you live in the US because you're even asking.

 

[Fayd]

Can anyone explain what the actual point of complex numbers is? I remember asking my high school math teacher this and getting a vague answer.

one method of solving systems of differential equations involves complex numbers..