Question

find, rank, nullity,row space, column space, null space and left null space of A

Answer 1

\[\left[ -2, -2, -1, 0 , 1 \right]\]

\[\left[ 1,2, 0, 1 , 0 \right]\]
\[\left[ -1, 0, -1, 1 , 1 \right]\]

Answer 2

first of all, you have to get rref of A, show me your work

Answer 3

1 0 1 -1 -1
0 1 -.5 1 .5
0 0 0 0 0

Answer 4

good, how many pivots do you have?

Answer 5

2

Answer 6

yeap, so? the rank of A is?

Answer 7

2

Answer 8

2

Answer 9

row space is 1st 2 rows

Answer 10

of what, show me those row

Answer 11

1 0 1 -1 -1
0 1 -.5 1 .5

Answer 12

yep . now, which column do you have pivots?

Answer 13

what are they look like, right on rref

Answer 14

i dont know

Answer 15

take a look at first 2 column of rref

Answer 16

are they \[\left(\begin{matrix}1 \\ 0\\0\end{matrix}\right) and \left(\begin{matrix}0 \\ 1\\0\end{matrix}\right)\] they are your column space

Answer 17

@ terenze, @ asmistre64 too fun, many people stop by and leave, give me the medal for my stuff???? no help???

Answer 18

@amistre64
@terenzreignz

Answer 19

medals are up to the discretion of the asker and are not to be "demanded". medals are also given out by bystanders who appreciate the quality of help you provide.

My question to medal ratio is about 1:2

Answer 20

... or is that medal to question ratio?

Answer 21

questions... asked or answered? :D

Answer 22

the Asker runs, just both you and me here..hahaha... too fun,!!

Answer 23

you did good one the answering part ;)

and i consider my questions asked portion to be immaterial ;)

Answer 24

Now you've made me consider my own ratios, @amistre64 :>