A sinusoidal waveform is mathematically expressed by

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A sinusoidal waveform is mathematically expressed by—

1. an odd function
2. an even function
3. a function that is even and half wave symmetric
4. None of these

Correct Option: A

Sinusoidal waveform is given below

having amplitude A and time period 2π.
From the waveform, we see that this is symmetric about the origin i.e., an odd function.
Hence alternative (A) is the correct answer.