numpy (matrix solver) - python vs. matlab

[someone]

On 05/01/2012 09:59 PM, Colin J. Williams wrote:
> On 01/05/2012 2:43 PM, someone wrote:
> [snip]
>>> a = [1 2 3]; b = [11 12 13]; c = [21 22 23].
>>>
>>> Then notice that c = 2*b - a. So c is linearly dependent on a and b.
>>> Geometrically this means the three vectors are in the same plane,
>>> so the matrix doesn't have an inverse.
>>
>
> Does it not mean that there are three parallel planes?
>
> Consider the example in two dimensional space.

I actually drawed it and saw it... It means that you can construct a 2D 
plane and all 3 vectors are in this 2D-plane...