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MHT CET2019Morning ShiftMathematicsTrigonometric EquationsActual

Which of the following function has period 2?

Options

  1. Acos ⁡ π 3 x
  2. Bcos ⁡ π 2 x
  3. Ccos ⁡ 2 π x
  4. Dcos ⁡ π x

Correct answer

D. cos ⁡ π x

Step-by-step solution

Key Idea Use period of c o s k θ is 2 π k . ∴ Period of cos ⁡ π x is 2 π π = 2

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