Explanation: T1=2π /4 T2=2π /8, T1/T2 = 2 T=T1 or 2T2 , T=π /2 4. Find the periodicity of the following signal. x(t)=cos((2π/7)t)sin((3π/5)t)
A. 30
B. 7
C. 35
D. 5/3
Answer:A
Explanation: T1=2π /4 T2=2π /8, T1/T2 = 2 T=T1 or 2T2 , T=π /2 4. Find the periodicity of the following signal. x(t)=cos((2π/7)t)sin((3π/5)t)
A. 30 B. 7 C. 35 D. 5/3
Explanation: T1=2π/2π/7 = 7 , T2=2π/3π/5=5/3 , T1/T2=5/21 , T=21T1 or 5T2 , T=35 5. Find the fundamental period of 1+sin^2 (3π/5)n .