红宝石 |矩阵 lup_decomposition()函数

lup_decomposition()是 Ruby 中的一个内置方法，返回给定矩阵的 LUP 分解。

Syntax: mat1.lup_decomposition()

Parameters: The function needs the matrix whose LUP decomposition is to be returned.

Return Value: It returns the LUP decomposition of the matrix.

示例 1 ：

#Ruby program for lup_decomposition() method in Matrix
  
#Include matrix
require "matrix"
  
#Initialize a matrix
    mat1
    = Matrix[[ 1, 21 ], [ 31, 18 ]]
  
#Prints the decomposition
      puts mat1.lup_decomposition()

输出：

Matrix[[1, 0], [1/31, 1]]
Matrix[[31, 18], [0, 633/31]]
Matrix[[0, 1], [1, 0]]

示例 2 ：

#Ruby program for lup_decomposition() method in Matrix
  
#Include matrix
require "matrix"
  
#Initialize a matrix
    mat1
    = Matrix[[ 1, 0, 0 ], [ 2, 3, 0 ], [ 31, 18, 19 ]]
  
#Prints the decomposition
      puts mat1.lup_decomposition()

输出：

Matrix[[1, 0, 0], [2/31, 1, 0], [1/31, -6/19, 1]]
Matrix[[31, 18, 19], [0, 57/31, -38/31], [0, 0, -1/1]]
Matrix[[0, 0, 1], [0, 1, 0], [1, 0, 0]]