1.

The value of ω17 is: (where ω is the cube root of unity)1. -ω2 2. ω23. -1 - ω24. 1 + ω2

Answer» Correct Answer - Option 2 : ω2

Concept:

The cube-root of unity 'ω' follows:

  • ω3 = 1
  • 1 + ω + ω2 = 0
  • ω3n = 1
  • ω3n + 1 = ω
  • ω3n + 2 = ω2

Calculation:

S = ω17

S = ω3 × 5 2

S = 1 × ω2 = ω2



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