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- Sep 24th 2013, 12:05 PMsoso123Help me
- Sep 24th 2013, 12:23 PMPlatoRe: Help me
- Sep 24th 2013, 01:12 PMchen09Re: Help me
Is this for a "several complex variables" class? I checked out the definition of modulus of u in C^3 (just let n=3 for your case):

$\displaystyle |u|=\sqrt{ \sum_{i=1}^{3} {|u|}_i^2} $

where $\displaystyle u_i = x_i + i*y_i $ and $\displaystyle {|u|}_i $ is the usual modulus of a complex number

Just apply to your u-bar - Sep 24th 2013, 02:06 PMPlatoRe: Help me
- Sep 24th 2013, 02:17 PMvotanRe: Help me
I read OP as a complex number problem and u is a vector. If i is a unit vector on the x-axis, the first component is 1 and one of the two other components must be either the unit vector j and k.

I read the components as (1 + 0i), (0 - 2i), (3 + 1i).

The moduli are: 1, 2, sqrt(10). - Sep 24th 2013, 02:28 PMPlatoRe: Help me
- Sep 24th 2013, 03:07 PMchen09Re: Help me
Here's where I got my point from:

http://www.dms.umontreal.ca/~gauthier/6140.pdf

Just saying. Don't need to reply to my post. - Sep 25th 2013, 05:14 AMtopsquarkRe: Help me
Plato's point is that there is an ambiguity in the OP's question. His point is well taken...at first blush what the OP is asking is obvious, but as $\displaystyle | \overline{u} | = | u |$ the problem makes no sense to ask. So questioning the OP is a natural step that needs to be taken. Continuing to make guesses at what soso123 was trying to ask is simply a waste of time and effort.

I'd say wait until soso123 comes back to clear this up. If (s)he doesn't then the problem gets dropped.

-Dan