|z| (1 Viewer)

[Teoh]

What does |z|^2 equal again?

I've just forgotten my complex numbers section...

I thought it was
|x+iy|^2
Which is x^2 - y^2?

 

[CrashOveride]

Its the modulus of z, squared.

x² + y²

 

[steverulz55]

|z| means the modulus, ie. the distance from the complex number to the origin

so letting z= x + iy
by pythagoras, |z| = rt (x² + y²)

then |z|² is just wot CrashOveride said

 

[Teoh]

Thankya very much.

 

[mr EaZy]

no worries

 

[mojako]

no worries

I can't see your name in the other posts...
From my simple brain that means you didn't answer his question

 

[:: ck ::]

he's being an idiot.

 

[Rorix]

guys, its nicer to say 'mathematics extension 2 challenged'

 

[steverulz55]

takes my credit too haha