[Numpy-discussion] How to solve homogeneous linear equations with NumPy?
Alan G Isaac
aisaac@american....
Sat Dec 5 22:27:54 CST 2009
On 12/3/2009 12:40 AM, Peter Cai wrote:
> If I have homogeneous linear equations like this
>
> array([[-0.75, 0.25, 0.25, 0.25],
> [ 1. , -1. , 0. , 0. ],
> [ 1. , 0. , -1. , 0. ],
> [ 1. , 0. , 0. , -1. ]])
>
> And I want to get a non-zero solution for it. How can it be done with NumPy?
>
> linalg.solve only works on A * x = b where b does not contains only 0.
Just to be clear:
linalg.solve does not have any problem with b=0.
It does have a problem with a singular coefficient matrix,
like the one above.
But I suppose Chuck answered your real question.
fwiw,
Alan Isaac
More information about the NumPy-Discussion
mailing list