I have a problem with LU

I run Matlab home and I have run these commands n=6

n =

     6

C= randn(n)

C =

    0.5377   -0.4336    0.7254    1.4090    0.4889    0.8884
    1.8339    0.3426   -0.0631    1.4172    1.0347   -1.1471
   -2.2588    3.5784    0.7147    0.6715    0.7269   -1.0689
    0.8622    2.7694   -0.2050   -1.2075   -0.3034   -0.8095
    0.3188   -1.3499   -0.1241    0.7172    0.2939   -2.9443
   -1.3077    3.0349    1.4897    1.6302   -0.7873    1.4384

[L,U,P,Q,R] = lu(C) {Error using href="matlab:matlab.internal.language.introspective.errorDocCallback('lu')" style="font-weight:bold">lu</a Too many output arguments. } Why? the syntax is the one of your help page on lu and my licence is on my mac book air. Thanks

Mario Arioli

[e-mail]

Answer 1

[Bruno Luong]

The four and five-output syntax are only applicable for sparse input matrix.

You can try by converting your dense matrix to sparse:

[L,U,P,Q,R] = lu(sparse(C))