Fundamental Period of the Signals

Status
Not open for further replies.

Eshal

Advanced Member level 1
Joined
Aug 29, 2012
Messages
470
Helped
16
Reputation
32
Reaction score
15
Trophy points
1,298
Location
Nowhere :)
Activity points
5,149
Hi, I have two questions.

1) See the picture
Here, in order to find fundamental period we divide the argument of the function by 2π. Like in (a)cos(0.01nπ) so the answer is f=0.01π/2π= then T=1/f=200.
But in (c) cos(3πn) the answer is T=2. Why? because according to me it is should be T=3π/2π then T=1/f=2/3=0.667. Why 2 in the solution?
Similarly, in (e) cos(π32n/10) the answer should be 3.1 but here answer is 10. Why?

2) Here I am attaching the question and three answers respectively,

Can anyone tell me what is going in part (a) of 1.4?

Thank you very much
 

Because the period by definition should be an integer number. The answers are the values that make the term an integer number i.e. for (π32n/10), n should be at least 10.
 

Status
Not open for further replies.

Similar threads

Cookies are required to use this site. You must accept them to continue using the site. Learn more…