Compute cofactor of a matrix based on row r and column c.

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Description

Compute cofactor of a matrix based on row r and column c.

Usage

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cofactor(x, r, c)

Arguments

x

matrix whose cofactor is desired to be computed

r

row number

c

column number

Value

cofactor of x, w.r.t. row r and column c.

Note

needs the function 'minor” in memory. attaches sign (-1)^(r+c) to the minor.

Author(s)

Prof. H. D. Vinod, Economics Dept., Fordham University, NY

Examples

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## The function is currently defined as
function (x, r, c) 
{
    out = minor(x, r, c) * ((-1)^(r + c))
    return(out)
  }

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