If triangle = |[a11,a12,a13],[a21,a22,a2...

If `triangle = |[a_11,a_12,a_13],[a_21,a_22,a_23],[a_31,a_32,a_33]|` and `A_ij` is Cofactors of `a_ij`, then value of `triangle` is given by :

`a_11A_31+a_12A_32+a_13A_33`

`a_11A_11+a_12A_21+a_13A_31`

`a_21A_11+a_22A_12+a_23A_13`

`a_11A_11+a_21A_21+a_31A_31`

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PSEB-DETERMINANTS-Exercise

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