User Portlet
| Discussions |
|---|
| hi, i wan't to use LUdecomposition for a matrix a but don 't give me the good result h = {{2, 4, -2}, {4, 9, -3}, {-2, -3, 7}} {lu, p, c} = LUDecomposition[h] i want to take upper element and lower element ,for that i use lu SparseArray[{i_, j_}... |
| Bonjour, sup = s[[1]]; For[j = 2, j = sup, sup = s[[j]], sup = sup]; ]; i don't know why this function If doesn't give me the high number of list s ? it give me always the number s[[1]]. please if there any response for this... |
| Hello, I am a beginner, I've written a method to calculate the unknown [mcode]arriere[D_, R_] := Module[{n, a, b, x}, a = D; b = R; n = Dimensions[a][[1]]; For[j = n, j >= 1, j--, If[ a[[j, j]] == 0 , Break[]]... |