how to plot frequency spectrum of the signal

For this equation = 𝐴 cos(2𝜋𝑓𝑐)

[KSSV]

Read about fft.

[Vladimir Sovkov]

Isn't it clear a priory that the frequency spectrum of the cosine function is just the delta-function? What do you want Matlab for?

[ZULFADHLI ZULKAFLI]

Prove that the following signal, 𝑣 = 𝐴 cos(2𝜋𝑓𝑐) is a periodic signal.

a. Show frequency spectrum of the signal

Answer 1

[madhan ravi]

Cosine Waves