nullsp=null(a)
Inputs  
a 
Any matrix. 
Outputs  
nullsp 
null (undefined) if the matrix is of full rank, or a matrix containing the basis for the nullspace of a .

a*nullsp= 0
. Further, any vector x
for which a*x=0
can be written as a linear combination
of the columns of nullsp.
null
as a function.
Otherwise, null
is the value of any variable which is undefined.
>>a=[2 3 4;5 6 7] >>a 2 3 4 5 6 7 >>c=null(a) >>c 0.4082 0.8165 0.4082 >>a*c Scaled by 10^15 0.4441 0