Which one of the following determinants has its value as zero?
, then
α = 1
α = 0
α = -1
None of these
The value of the determinant is
0
1
(a - b ) ( b - c) (c - a)
Δ = 0
Δ = 2 abc
Δ = -abc
Δ = a2 + b2 + c2
If 1, ω , ω2 are the cube roots of unity, then
ω
ω2
-2
x2 + 2
2
∞
The value of is
20
5
