If x1[n] = sin(2pi n/7) + 1, x2 = sin(npi/5) and x[n] = x1[n]+x2[n], what is the fundamental period of x[n]?
Added by Gregory G.
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For x1[n], we know that sin() has a period of 2π, so sin()+1 will have a period of 2π as well. For x2[n], we know that sin() has a period of 2π. Show more…
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