- #1
Paradoxx
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- 0
Homework Statement
So, I'm solving a dipole thing and I have these vectors:
|r + d - r'| = (r² + d² - r'²)(1/2)
Homework Equations
I want to expand this but I have no idea how! I know I may have an infinite power series, but I may expand at the square terms tops...
Before I needed to do the same with something like (a + b)(1/2) and I got it, I found how to do it. But in this case I can't find a conection...
Can anyone please explain to me how to? Or at least indicate somewhere where I can find it? Because I looked over and couldn't find...
Thanks...