minor and cofactor of 3x3 matrix

m.js

console.clear()

matrix = [
  [1, -1, 3],
  [-2, 5, 7],
  [1, 1, 2]
]

for (let i = 0; i < 3; i++) {
	for (let j = 0; j < 3; j++) {
		let minor = JSON.parse(JSON.stringify(matrix))
		minor.splice(i, 1)
		minor.forEach(c => c.splice(j, 1))
		
		let M = minor[0][0] * minor[1][1] - minor[0][1] * minor[1][0]
		let A = Math.pow(-1, (i + 1) + (j + 1)) * M
    
    console.log(`M(${i + 1},${j + 1}) = ${minor[0][0]} * ${minor[1][1]} - ${minor[0][1]} * ${minor[1][0]} = ${M}`)
// 		console.log(`M(${i + 1},${j + 1}) = ${M}`)
    console.log(`A(${i + 1},${j + 1}) = ${A}`)
		minor.forEach(row => console.log(row))
	}
}