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):
where and is the usual modulus of a complex number
Just apply to your u-bar
I read the components as (1 + 0i), (0 - 2i), (3 + 1i).
The moduli are: 1, 2, sqrt(10).
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 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.