Ruby | Matrix cofactor_expansion() function

The cofactor_expansion() is an inbuilt method in Ruby returns the cofactor_expansion of the given matrix along a given row or column. In other words, it returns the Laplace expansion.

Syntax: mat1.cofactor_expansion(row: num or col:num)

Parameters: The function accepts one mandatory parameter row or coloum whose cofactor_expansion is returned.



Return Value: It returns the cofactor-expansion of the given matrix along the given row or column.

Example 1:

filter_none

edit
close

play_arrow

link
brightness_4
code

# Ruby program for cofactor_expansion() method in Matrix
  
# Include matrix 
require "matrix"
  
# Initialize a matrix 
mat1 = Matrix[[1, 21], [31, 18]]  
  
# Prints the value of mat1.cofactor_expansion
# first row 
puts  mat1.cofactor_expansion(row:1)

chevron_right


Output:

-633

Example 2:

filter_none

edit
close

play_arrow

link
brightness_4
code

# Ruby program for cofactor_expansion() method in Matrix
  
# Include matrix 
require "matrix"
  
# Initialize a matrix 
mat1 =  Matrix[[13, 1, 5], [12, 1, 5], [11, 2, 5]] 
  
# Prints the value of mat1.cofactor_expansion
# first row 
puts  mat1.cofactor_expansion(column:0)

chevron_right


Output:

-5


My Personal Notes arrow_drop_up

Check out this Author's contributed articles.

If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.


Article Tags :

Be the First to upvote.


Please write to us at contribute@geeksforgeeks.org to report any issue with the above content.