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Electronics and Communication Engineering - Signals and Systems - Discussion

Discussion Forum : Signals and Systems - Section 4 (Q.No. 19)
Signals and Systems
19.
If a function has only cosine terms, it must satisfy the equation
f(t) = -f(t)
f(-t) = f(t)
f(-t) = -f(t)
none of the above
Answer: Option
Explanation:

cos (- θ) = cos θ.

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