DeterminantHard
Question
If 
= (x - y) (y - z) (z - x) 
, then:
= (x - y) (y - z) (z - x) , then:Options
A.k = - 3
B.k = - 1
C.k = 1
D.k = 3
Solution
= xkykzk 
= (x - y) (y - z) (z - x) (xy + zy + zx) xkykzk at k = - 1
= (x - y) (y - z) (z - x)
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