If ∆=\left|\begin{array}{ccc}a_1 & b_1 & c_1 \ a_2 & b_2 & c_2 \ a_3 & b_3 & c_3|\end{array} and A_1, B_1, C_1 . . . are the cofactors of a_1, b_1, c_1 . . . . . . then a_1 A_2+b_1 B_2+c_1 C_2 is equal to

CUSAT 2022 BTech Solved Paper Shift 1

Question : 154 of 200

Marks: +1, -0

If ∆=|

| and A1,B1,C1... are the cofactors of a1,b1,c1...... then a1A2+b1B2+c1C2 is equal to

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