Question
Which of the following is the formula for cofactor of an element aij ?
Options :
Aᵢⱼ=(1ᶦ⁺ʲ Mᵢⱼ
Aᵢⱼ=(-2)ᶦ⁺ʲMᵢⱼ
Aᵢⱼ=(-1)ᶦ⁺ʲ Mᵢⱼ
Aᵢⱼ=(-1)ᶦ⁻ʲ Mᵢⱼ
Answer :
Aᵢⱼ=(-1)ᶦ⁺ʲ Mᵢⱼ
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