Question

can some one help me on null space and column space?

Answer 1

only if you ask a question pertaining to it.

Answer 2

Did you have a question about these things?

Answer 3

i didnt undrstand its basics? its concepts. .

Answer 4

null space: http://mathworld.wolfram.com/NullSpace.html
column space: http://mathworld.wolfram.com/ColumnSpace.html
hope this helps

Answer 5

For a given matrix A..

The null space is the solution set to the equation
\[A\vec{x} = \vec{0} \]

The column space is the set of linearly independent columns in the matrix A.

Answer 6

but how do we knw the numbr of independent columns in a given matrix?

Answer 7

If you use row operations to put the matrix into its reduced form, the pivot columns will correspond to the independent columns of A.

Answer 8

ok thanks