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प्रश्न
If `triangle = |(a_11,a_12,a_13),(a_21,a_22,a_23),(a_31,a_32,a_33)|` and Aij is Cofactors of aij, then value of Δ is given by ______.
विकल्प
a11 A31+ a12 A32 + a13 A33
a11 A11+ a12 A21 + a13 A31
a21 A11+ a22 A12 + a23 A13
a11 A11+ a21 A21 + a31 A31
उत्तर
If `triangle = |(a_11,a_12,a_13),(a_21,a_22,a_23),(a_31,a_32,a_33)|` and Aij is Cofactors of aij, then value of Δ is given by a11 A11+ a21 A21 + a31 A31.
Explanation:
∆ = the sum of the product of the elements of a row or column and their corresponding super-parts
C1 Components of a column (a11, a21, a31)
Cofactors A11, A21, A31
⇒ ∆ = a11 A11 + a21 A21 + a31 A31
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