Cofactor
Cofactor[m,{i,j}]
calculates the 
cofactor of matrix m.
Combinatorica`
Combinatorica`
Cofactor
As of Version 10, most of the functionality of the Combinatorica package is built into the Wolfram System. »
Cofactor[m,{i,j}]
calculates the 
cofactor of matrix m.
Details and Options
- Cofactor functionality is now available in the built-in Wolfram Language function Det.
- To use Cofactor, you first need to load the Combinatorica Package using Needs["Combinatorica`"].
Wolfram Research (2012), Cofactor, Wolfram Language function, https://reference.wolfram.com/language/Combinatorica/ref/Cofactor.html.
Text
Wolfram Research (2012), Cofactor, Wolfram Language function, https://reference.wolfram.com/language/Combinatorica/ref/Cofactor.html.
CMS
Wolfram Language. 2012. "Cofactor." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/Combinatorica/ref/Cofactor.html.
APA
Wolfram Language. (2012). Cofactor. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/Combinatorica/ref/Cofactor.html