Diketahui matriks b= (-3 -2 4 2) invers matriks b adalah

jawab

B = [-3...-2||4...2]

det b = -3(2)  -4(-2)
det B = -6 +8
det B = 2

B⁻¹ = 1/2 [2...2||-4....-3]

B⁻¹ = [1...1||-2...-3/2]