GATE | GATE-CS-2000 | Question 49
The cofactor has all zeroes except 1 in its first column so lets find the cofactor of a(1,1).
This turns out to be 2*1 – 6*0 = 2
a(0,0) * a(1,1) * cofactor(a(1,1)) = 2 * 1 *2 = 4
Hence the answer is 4.
This explanation is contributed by Srestha.
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