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Q1. | Which of the following cannot be the Fourier series expansion of a periodic signal? |

A. | x(t) = 2 cos t + 3 cos 3t [Wrong Answer] |

B. | x(t) = 2 cos pt + 7 cos t [Wrong Answer] |

C. | x(t) = cos t + 0.5 [Correct Answer] |

D. | x(t) = 2 cos 1.5pt + sin 3.5 pt [Wrong Answer] |

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Explanation:-
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