LU Decomposition Calculator

Decomposing a square matrix into a lower triangular matrix and an upper triangular matrix. Partial pivot with row exchange is selected.

    1. (enter a data after click each cell in matrix)
Matrix A 
{aij}   

LU Decomposition
The row pivot information in LU decomposition is in one-dimensional array P.
    LU Decomposition
    [1-10] /21Disp-Num
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    [1]  2019/11/15 08:09   Male / 20 years old level / High-school/ University/ Grad student / Very /
    Purpose of use
    homework in numerical methods class
    [2]  2019/11/09 00:04   - / - / - / - /
    Bug report
    2,4,1;-1,-2,2;4,2,-3 matrix LU decomposition calculation result is different from there:
    https://matrixcalc.org/tr/#LU-decomposition%28%7B%7B2,4,1%7D,%7B-1,-2,2%7D,%7B4,2,-3%7D%7D%29
    [3]  2019/11/03 02:03   Female / Under 20 years old / High-school/ University/ Grad student / Very /
    Purpose of use
    I would say checking my answers but it's a little more sinister than that
    [4]  2019/11/02 03:52   Male / 20 years old level / High-school/ University/ Grad student / Useful /
    Purpose of use
    Verify my answer and method.
    [5]  2019/10/27 20:00   Male / Under 20 years old / High-school/ University/ Grad student / Very /
    Purpose of use
    checking homework answers
    [6]  2019/10/25 09:14   Male / Under 20 years old / High-school/ University/ Grad student / Very /
    Purpose of use
    Checking answers
    [7]  2019/05/20 19:05   Male / 20 years old level / High-school/ University/ Grad student / Useful /
    Purpose of use
    Studying for final, and I needed a better way to check my answers
    Comment/Request
    I thought that row swapping is not allowed in LU factorization even before we begin. If you swap rows, then an LU decomposition will not exist. why did it switch R2 and R1 for me?
    [8]  2019/05/17 03:49   Male / 20 years old level / High-school/ University/ Grad student / A little /
    Purpose of use
    Its only decimal, we need fraction
    [9]  2019/03/23 14:47   Female / 20 years old level / High-school/ University/ Grad student / Useful /
    Purpose of use
    checking my code for LU decompo
    [10]  2019/03/06 08:46   Male / 20 years old level / High-school/ University/ Grad student / Very /
    Purpose of use
    Check my own code

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