Periodic Discrete Time Signals

[@gargidas16]

Thank you sir , these lectures are really helpful

[@rationalthinker9612]

Thank God for you. I watched almost all 313 of the videos before I even started my signals and systems class, I wanted to be ahead when the semester started. I kind of stopped right around the DTS stuff because the semester started and I had to figure out what in the f*ck the incompetent professor was trying to teach. She started going over DTS signals and I swear to God, she's the worse professor on the face of the Earth. So I quickly resumed the videos at the DTS stuff and I know exactly how it all works now. The rest of my classmates are up the creek without a paddle. You sir are a God send.!!!

[@vseelix957]

Yeah bro my systems and signals lecturer is god awful, never goes in depth.

[@skasif4476]

kindly mention the lecture number in the name of the video so that we can easily understand where we are watching...

[@lightningtheway2]

Yyy

[@starkendeavours7072]

This is LEC 283.

[@thirumalai186]

u done a great job

[@surajgajbhiye666]

Sir please DTFT lectures. . .

[@kandratechinkannada9334]

Thank you very much sir

[@thirumalai186]

thank you sir

[@nitinkamra8972]

sir...ye N= 4 kaise aya isme...jo +1 lgaya wo kis liye?🤔ist part m is lecture k

[@ELBMamtasingh]

Great

[@gerardman90]

What is omega naught? how it differs to omega?

[@companymen42]

Second part? Link please.

[@oim8254]

Hi sir. If X[n] = cos (2n), therefore the period is pi which is irrational, is the discrete time signal still periodic?

[@siphovundla5057]

If somebody does come across this question the answer is that cos(2n) on its own is periodic however if you add a signal with a period of 2 for example, that resulting signal is no longer periodic. That requirement is only for composite signals and cos(2n) on its own is not a composite signal

[@coolmanqabaha3820]

why 1= exp(j2pik)

[@akibjawed5076]

have you heard Euler's identity? just use that you will get your answer.

[@coolmanqabaha3820]

@@akibjawed5076 the exp is not jpi it is 2 pi k? that what I mean

[@akibjawed5076]

where is e^(2 pi k) used, mentioned the time?

[@coolmanqabaha3820]

@@akibjawed5076 11:50

[@ARRun]

@@coolmanqabaha3820 use Eulers identity (e^(j*pi) = -1) and then square it and raise both side with power k.

[@abhishekkhandelwal8642]

integer/integer is not always rational. Example pi = 22/7

[@sreeharshaparuchuri756]

@@nesoacademy LOL

[@aayush5474]

@@nesoacademy BURN 100 xD

[@anshumanpanigrahi7323]

Actually irrational is not equal to integer/integer,it's just an approximation for problems,pi value is non terminating non repeating✌️✌️

[@arkabandyopadhyay4614]

Actually, pi is not equal to 22/7. pi= 3.1415926535897932384626433832795 while 22/7 =3.1428571428571428571428571428571

[@walterjames5719]

22/7 is a rational number while pi is not a rational number. There is a little difference mate