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I have to calculate periodicity of e^j(2n + π/4)

If cos2n is Aperiodic then what is the periodicity of cos(2n + π/4) ? Please explain in steps for beginner!

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  • $\begingroup$ Hi and welcome to dsp.stackexchange.com! Please add some details to your question, for example the exact wording of your assignment. This seems to be a homework question, so you are more likely to receive help, if you show some effort of your own. $\endgroup$ – Max Apr 12 '19 at 10:18
  • $\begingroup$ so are you saying that $\cos 2n$ is "aperiodic" or "a periodic"? $\endgroup$ – Ahmad Bazzi Apr 12 '19 at 10:54
  • $\begingroup$ Cos2n is aperiodic! $\endgroup$ – Krishna Kumar S Apr 12 '19 at 11:12
  • $\begingroup$ What is the meaning of aperiodic? The cosine function is periodic with $T=2\pi$. $\endgroup$ – user41664 Apr 12 '19 at 14:46
  • $\begingroup$ @KrishnaKumarS Changing the phase of an aperiodic signal cannot turn it into periodic. $\endgroup$ – MBaz Apr 12 '19 at 17:35

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