Symbolic Math Toolbox

colspace

Basis for column space

Syntax

• B = colspace(A)
  

Description

colspace(A) returns a matrix whose columns form a basis for the column space of A. A is a symbolic or numeric matrix. Note that size(colspace(A),2) returns the rank of A.

Examples

The statements

• A = sym([2,0;3,4;0,5])
  B = colspace(A)
  

return

• A =
  [2,0]
  [3,4]
  [0,5]
  
  B =
  [    1,   0]
  [    0,   1]
  [-15/8, 5/4]
  

See Also

null

orth in the online MATLAB Function Reference

collect

compose