0
$\begingroup$

How would one go about determining if the following discrete time signal x[n] is periodic, and if it is, determine its fundamental period?

enter image description here

I understand that the period for the second exponential term is 6, but apart from that I am unable to further my calculation.

The answer to the question above is:

enter image description here

but I fail to understand how the equation highlighted in yellow comes to be. Any help with this matter would be appreciated.

$\endgroup$
1
$\begingroup$

The first term is just a constant, so it's not relevant to periodicity. The sequence as written is periodic with a fundamental frequency of 1/6.

Your cited solution makes no sense to me.

$\endgroup$

Your Answer

By clicking "Post Your Answer", you acknowledge that you have read our updated terms of service, privacy policy and cookie policy, and that your continued use of the website is subject to these policies.

Not the answer you're looking for? Browse other questions tagged or ask your own question.