# Thread: Show A spans R^3

1. ## Show A spans R^3

Hi,
I am not sure if I am answering this correctly. I have shown that scalars a,b,c,d are not linear independent..but what does that mean for span??Linear indep isnt neccessary for span right?..
I was sure I knew what span was.I would appreciate feedback.thankyou.
Show A spans R^3
A={(1,1,0),(2,0,1),(0,1,3),(1 ,-1 ,-4)}

Note each bracketed item is a column vector.
(sorry about the colour of the photo-somehow it turned pink)..

2. ## Re: Show A spans R^3

Hey n22.

Your matrix should have four rows instead of 3 (and you should get a row of zeroes for one row after row reduction).