Signals and Systems Lec -12: Problems on Systems

This lecture is based on problem solving session on classification of systems. in this i solved few problems on how to identify given system as a memory less, linear, time invariant, causal and stable.
and also i uploaded a PDF file on Problems on Systems in our blog.

[mr.praveersaxena]

NICE WORK SIR.. KEEP UP THE NOBLE WORK.. HATS OFF..I AM PREPARING FOR GATE JUST FOLLOWING YOU..

[zinebadaika]

For T.V, we have 2t-t0 and 2t-2t0 that's why the sys is T.V, good luck, thx a lot sir.

[michaelmurmu]

at 6:52 i think when T=-2t then k=2t-t0

plz reply sir..

[utkarshpant]

Sir I couldn't find the questions based on this lecture in your blog
Plz help

[AsifAnsari-xprs]

27:58
The system is unstable, right?

The limit ranges from -1 to infinity, which's unbounded and hence unstable

[sreelekshmikamal]

sir at 16:46 y(t)= u(t)+u(t-2), bounded output means what ? does it indicate that the amplitude must be constant?

[muddasirulhassan]

Sir in y(n) =ev(x(n-1), present value is depending on future value also when i take n=negative value. Then how it is with memory? Because for present and past value it is ok but for memory system is it depend on future value? But here depending on future value also. Sir plz reply...

[gokulraveendran]

sir can you please explain the blind rule for linear and nonlinear system identification

[ChandrakantVadher]

Sir, How do we check whether system is invertible or non invertible? in both the cases of discrete time and continuous time? please give procedure and example

[factvedas]

sir y(n)=x^2(-n) is causal or non causal...please tell me sir and can i write it as x(-n) x(-n)

[gokulraveendran]

sir 19:24 ...in that question if y(t)=x(t) + x(-t-2) for x(t)>=0...then is it time variant or time invariant..???...
By blind rule...if there is any time scaling the system must be time variant system..is it correct sir??

[anilkumar-shbh]

sir how to check for invertibility upload one or two examples

[swagatika]

8.10 why can't I put x(t-tau) bcoj here t and tau are same????

[sujathagangireddy]

Sir, Causal system implies present + past; memory system is present and past; so all memory systems are causal ; plz reply

[sumitsouravamohanty]

sir, is Ramp signal r(t) is bounded or inbounded

[vikasrokana]

sir at 20:44 why we can't write -n+1

[montu]

sir please check i think u have taken wrong limit at 8;37 the limit should be from -infity to 2t - to but u have taken 2t + to? so the answer is time invariant

[bibhasingh]

Sir please clear this doubt
Even x(t) is causal or non causal
CS x(t) is causal or non causal, and linear or non linear

[Mallulocopilot]

Sir.. Your last quetion given as linear.. 4n+1 due to the constant it is nonlinear

[priyadarshanikoul]

sir at 10:00 what if we assume a sinusoid as input ?