Find null space basis matlab

Question

I want to find the basis of null space in matlab. I know that I can find it by simply running ns = null(A,'R') or Z = null(A) but I was wondering what would be the way to that by "hand". What I wanna way is; Is there a way to find the null space basis of a matrix by running many for loops and ifs? If yes could you please help

score 0 · Answer 1 · answered Apr 01 '16 at 07:03

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Is there a way to find the null space basis of a matrix by running many for loops and ifs

Yes.

Wikipedia explains how you can use the Singular Value Decomposition to determine a basis for the nullspace of a matrix. The question then becomes "How do you calculate the SVD?", which wikipedia also answers, though its answer does not seem particularly enlightening. Maybe this is of more use.

answered Apr 01 '16 at 07:03

Wouter

7,673

Well, thanks for sharing but I don't think I'll be able to write that in matlab code, I am not so good :p – I.suck.Math. Apr 01 '16 at 07:12

score 0 · Accepted Answer · edited Apr 13 '17 at 12:21

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If you can code up row-reduction by “hand”, then you should be able to use either of the methods described here to find a kernel basis.

edited Apr 13 '17 at 12:21

Community

1

answered Apr 01 '16 at 07:14

amd

53,693

Find null space basis matlab

2 Answers2