first one... on integrating at t = (-1) we may get final input as (-0.5) so most probably we are seeking into future... so we consider it as Non-causal System.
Ist one is non causal bro You should check at t=-4,-5,-6, etc for all present negative values you will get future values of output That's why 1st is non causal Thankyou
I am very much confused with the statement that past values lie on the left side of t=O..plz anyone explain? Becz when we plot X(t-1) which is past value..it is plotted on the right side of t=O..
@@fayyazahmad5334 Check it again.When you take t=-4,-5,-6 etc, you will get the present value. So the system is causel. For all the values of t multiplied by 2 will again be divided by 2 hence it is the same as the first problem.
Bro... Don't you think, you should provide the answers of homework problem in the next video even if there topic is being changed from the next video? It would help us to match our answers.
For the integral with lower limit -infinity and upper limit t+1 can be written as integral with limits -infinity to t and t to t+1 which means the integral with limits t and t+1 requires -infinity to t integral and similarly -infinity to t integral requires the past value of integral. In this case the system will be causal but the answer you gave is non-causal. Why?
@@Music-tp8gg you made a mistake here,my friend. substitute tau - 1 = z. d(tau-1) = dz . So the integrand becomes z dz.if we integrate it within limits from -infinity to 2t ,it will surely become a non-causal system
Sir in the last example of differentiation, I think it should be non_causal as according to its definition, at any instant of time if output depends on future input , then it's non causal .. plz do tell me that why did we not use this definition here ?
Again watch video..... Differentiation not define it causal or non causal,we can't select or define that's causal or non causal but for calculating answer we have to assume that system is causal because we have value of past as well as present...
1-Causal 2-Non-Causal (let t-1=u then integration of x(u)du but limit will be -infinite to u+1 so again we put it into x(u) then final result will be limit -infinite to u+1 integration [x(u+1)du] I hope everyone understand what i want to say so y(t)=x(u+1) in which output is depends upon the future value of input So the system is Non-Causal😇
that is not t-1 but tau-1 limits wouldn't change on letting tau-1 = u. Then y(t) will come out to be equal to x(t) applying limits on u. Since this is present hence causal. y(t)=x(u+1) doesn't make any sense to compare. Infact replace it back with t-1 you will get x(t-1+1) = x(t).
in the 8th example.. if we were asked to finalise weather the system is causal or non-causal, i think its better to choose non-causal, because, if the system is proved to be non-causal atleast once then its completely non causal
Karthik Holla : when t=-2, output depends on x(-2). How? Like this - See, t=-2, 2t=-4, x(tau/2)=X(t)=x(2). Try to differentiate between Dummy variable tau and t. Hope you got an idea of what I am saying..
why no.1 i got non-causal i used u-substution to this integral and got 1/2 at the coefficient and see at the last term of this integrating i got 1/2 times x(2t) what i missed?
regardless, in science and maths the symbol is pronounced tau. It is possible greek mathematicians pronounce it taf, but i haven't seen a greek lecture.
as because upper limit is '2t'....there is remain only x(t).....so whatever the value you put ..we are getting only present value...no future value...so its CAUSAL,,,,understood?😊
1- causal
2- causal
3- non causal
correct
first one... on integrating at t = (-1) we may get final input as (-0.5) so most probably we are seeking into future... so we consider it as Non-causal System.
@@mr.infrasonic4084 The limit goes from -Infinity to -2 (2t = 2 * -1) right, so it depends only on past input , so causal system
1. C
2. C
3. NC
Ist one is non causal bro
You should check at t=-4,-5,-6, etc for all present negative values you will get future values of output
That's why 1st is non causal
Thankyou
@@fayyazahmad5334
Substitute 2t in tau and youll get x(t) which is independant of future values
I am very much confused with the statement that past values lie on the left side of t=O..plz anyone explain? Becz when we plot X(t-1) which is past value..it is plotted on the right side of t=O..
I can confirm these answers.
@@fayyazahmad5334 Check it again.When you take t=-4,-5,-6 etc, you will get the present value. So the system is causel. For all the values of t multiplied by 2 will again be divided by 2 hence it is the same as the first problem.
Bro... Don't you think, you should provide the answers of homework problem in the next video even if there topic is being changed from the next video? It would help us to match our answers.
1) causal
2)causal
3)Non-causal
sir,it would be better if you revel ans of previous HW pbs in immediate next lectures
ye neso academy reply tak to karte nhi HW problem me
Thank you again for the lecture the answers are:
Causal System
Causal System
Non Causal System
For #2 did anyone do this?:
let u = τ - 1
du/d(τ-1) = 1
du = d(τ-1)
y(t) = (integral from -infinity to t-1) x(u)d(u) which is causal
Yes t-1 take as single value
Tq
Tqq
Upper Limit will be t
For the integral with lower limit -infinity and upper limit t+1 can be written as integral with limits -infinity to t and t to t+1 which means the integral with limits t and t+1 requires -infinity to t integral and similarly -infinity to t integral requires the past value of integral. In this case the system will be causal but the answer you gave is non-causal. Why?
Sir your lectures are really awesome and helpful. Please upload the rest lectures asap.
sir please give the answers also of homework...otherwise we will not know whether we gave correct answer.
Causal system
Causal system
Noncausal system
can you explain the 2nd one!!! like a detailed stepwise explanation would be appreciated, please.
@@NAKSHATRARATHOREBEC Substitute tau-1 by say z, d(tau-1) = d(z-1)
@@Music-tp8gg you made a mistake here,my friend. substitute tau - 1 = z. d(tau-1) = dz . So the integrand becomes z dz.if we integrate it within limits from -infinity to 2t ,it will surely become a non-causal system
Sir in the last example of differentiation, I think it should be non_causal as according to its definition, at any instant of time if output depends on future input , then it's non causal .. plz do tell me that why did we not use this definition here ?
Again watch video.....
Differentiation not define it causal or non causal,we can't select or define that's causal or non causal but for calculating answer we have to assume that system is causal because we have value of past as well as present...
but non causal aren't practical so i think it should be causal as it's practical
1-Causal
2-Non-Causal (let t-1=u then integration of x(u)du but limit will be -infinite to u+1 so again we put it into x(u) then final result will be limit -infinite to u+1 integration [x(u+1)du]
I hope everyone understand what i want to say so y(t)=x(u+1) in which output is depends upon the future value of input
So the system is Non-Causal😇
that is not t-1 but tau-1 limits wouldn't change on letting tau-1 = u. Then y(t) will come out to be equal to x(t) applying limits on u. Since this is present hence causal. y(t)=x(u+1) doesn't make any sense to compare. Infact replace it back with t-1 you will get x(t-1+1) = x(t).
Causal,causal,non causal sir please keep making lecture on signal and system as soon as possible plz keep all lectures at A time
sir please upload the rest lectures soon.Thank you so much for these.
in the 8th example.. if we were asked to finalise weather the system is causal or non-causal, i think its better to choose non-causal, because, if the system is proved to be non-causal atleast once then its completely non causal
1. nc -> for t= t (before 2t) : it will give us x(t/2) and this is non causal
2. c
3. nc
how are you so sure 2t comes before t? eg: if t is -3, then -6 does not come before -3.
I think these are the correct answers. I don't know why people got different answers.
1. Causal
2. Non -causal as d(t-1) will shift new axes by 1 unit .....Therefore depending on future values.
3. Non causal
But d(t-1) is coefficient so neglect, I think so
1,2 causal
3 nc
thankyou for saving my life sir
You saved me with this video, thank you so much
nicely explained the differential part question.
1.c,2.nc,3.nc
Needless to say, thank you...
answer
1, causal
2, causal
3, non-causal
1. Causasl System
2. Casusal System
3. Non Causal system
1.causal system
2.causal system
3.Non causal system
how can you say 1st one is causal put t =-2 and check
Karthik Holla : when t=-2, output depends on x(-2). How? Like this - See, t=-2, 2t=-4, x(tau/2)=X(t)=x(2). Try to differentiate between Dummy variable tau and t. Hope you got an idea of what I am saying..
1,2 causal
3 non causal
1.causal
2.causal
3.non causal
1 non causal
2 non causal
3 causal
Thank You Sir
In example no.8 what will be the nature of the system if the slope is
1) 0
2)infinity
?????
If 0 then causal, if infinity no slope can be mathematically defined so it's out of the scope.
Thanks for your lecture sir
Causal , Causal , Non - Causal !!
why no.1 i got non-causal
i used u-substution to this integral and got 1/2 at the coefficient and see at the last term of this integrating
i got 1/2 times x(2t) what i missed?
You don't need to do that, just plug in the bounds and you'll get x(-infinity) to x(t) which is causal.
thanks sir
The answer is
C
N.c
N.c dhyaan s put kro -1 in 2 question
treat (tau-1) as a different variable and then try
If put -1 then also it can be causal
Sir please complete ss syllabus ASAP as gate is approaching.and we will be highly thankful if soo.
1)non causal
2)non causal
3)non causal
💯
Causal
Causal
Non-causal
1.C
2.NC
3.NC
Tell me if I am wrong
C, C, Nc*
I think right
1. Causal System ;
2.Causal System ;
3. Non-Causal System.
please correct me if, I am wrong.
what is meant by d(T-1) in part 2
instead of t, (t-1) is a variable parameter. You can consider (t-1) = p some other variable and put in the equation 2 and then analyze.
If you replace t-1 with a....then limit change to a+1 and it become non causal in 2nd question....check your solution
1. Causal
2. Causal
3. Non causal
Is differentiation is causal or non-causal?
causal....as it depends on present and past values
1- NC
2-C
3-NC
1st and 2nd question are causal and 3rd question are non - causal system...
my answers are ; casual , casual ,non casual
can anyone please send me the solution of 2nd homework question
non causal
causal
nin causal
thanks
if we put t=-1 in ques 7, then it will be past i.e. it is causal system too for t
The system should be causal throughout the limit for being causal otherwise non causal
What about when derivative is on the y not x
Causal,causal,non-causal
C,C,NC
1 NC
2 C
3 NC
Causal,
causal,
non casual
PLEASE GIVE ANSWER TO HOMEWORK PROBLEMS
Please anyone can explain 2nd hw problem?
How it is causal?
let u = τ - 1
du = d(τ-1)
y(t) = (integral from -infinity to t-1) x(u)d(u) which is causal
@@kirubakaran6758 how did the upper limit change?
1 causal. 2 causal. 3 non causal
Y[n] =2x[2 ^n] this system is non-causal or causal ?
Ishita Rathod Non-Causal
Non causal
Non causal
nc
pls someone explain how
Causal
Causal
Non
1.c
2.c
3.nc
Causal
Causal
Non causal
Sir plz solve hw questions in next class
1.NC
2.causal
3.NC
1-NC
2-NC
3-C
C , NC,NC
what if both the limits of integration are constants??
Y(t)=t x(t-1) whether it is causal or non causal??
Causal system
Causal
e^x(t) is it causal or not?????
NON CAUSAL
@@PasanJayaweeraYashoda how?
causal
causal
n. causal
causal
causal
non - causal
noncausal
causal
noncausal
1 should be non causal, take t = - 0.5
just fyi the greek letter "τ" is pronounced "taf", not "tau". Source: am greek
regardless, in science and maths the symbol is pronounced tau. It is possible greek mathematicians pronounce it taf, but i haven't seen a greek lecture.
all are causal
causal,causal,non causal
Can you please explain these answers?
C AND C
1. N.c
2.c
3.N.c
how Question no is 6 is non causal as it depends on both i.e past and future..Answer me
Abe .....
C
C
NC
Am I right?
Any one pls explain how second one causal
Thamil Vani put t values 0 1 -1 and see whether they depending on past value or future value. We get it depends on past values hence casual
C.s
C.s
N.c .s
☺️
All are non causual
C
C
NC
Any telugu guy here?
chepp ra!
Causal,non causal,non causal.
Ashish Singh
How you got this results
nc,c,nc
Nc, C,Nc
No😂😂😂
casual
casual
non casual
C
NC
NC
Causal
Causal
Non-Causal
1.causal system
2.causal system
3.Non causal system
how can you say 1st one is causal put t =-2 and chec
as because upper limit is '2t'....there is remain only x(t).....so whatever the value you put ..we are getting only present value...no future value...so its CAUSAL,,,,understood?😊
Thank you
hey bro i am also getting same result but i m little bit confused with 2nd question "d(t-1)"
ya at t we getting x(t-1)d(t-1) if you confused just for ex (put (t+1) just for ex )in all situation you get past values
1.Causal 2.causal 3.non causal
Can you please explain your answers?
Im confused
C, C, NC
1. causal
2. causal
3. non causal
1.C
2.C
3.NC
1. Causal
2. Non-Causal
3. Non-Causal
Causal
Causal
Non cousal
Causal, causal, non causal