inverse DFT help and find sequence

[Geoff Hayes]

NTU - what have you tried so far? If the code you have written is not giving you the correct result, then please post the code along with a description of the problem (include the desired or expected behaviour) so that someone can offer some guidance. If you are observing errors, then please post the code and the full error message. You will more likely get a positive response if you show what you have attempted, rather than just copying and pasting your assignment to this post.

[NTU]

Geoff Hayes, thank for your comment. I'm sorry that I didn't clearly explain the question. I can use Matlab to numerically calculate the right inverse DFT x[n].

The problem I met is that I cannot derive the x[n](general expression), not numerical value.

[Rick Rosson]

Please post your code.

[NTU]

Dear Rick, I can use Matlab to numerically calculate the right inverse DFT x[n].

The problem I met is that I cannot derive the x[n](general expression), not numerical value.