CAUSAL/ NON-CAUSAL SYSTEMS - complete steps and sums

𝗗𝗢𝗪𝗡𝗟𝗢𝗔𝗗 𝗦𝗵𝗿𝗲𝗻𝗶𝗸 𝗝𝗮𝗶𝗻 - 𝗦𝘁𝘂𝗱𝘆 𝗦𝗶𝗺𝗽𝗹𝗶𝗳𝗶𝗲𝗱 (𝗔𝗽𝗽) :
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SIGNALS & SYSTEMS Books:
Schaum’s: amzn.to/3YCXCRv
Ramesh Babu: amzn.to/3S0mnFn

[@ShrenikJain]

Shrenik Jain - Study Simplified (App): play.google.com/store/apps/details?id=co.kevin.nxpgd

[@danielpadmore171]

After searching the entire KZbin to do my assignment than I found this video. I must admit that your video has help me a lot understanding this topic. Kudos to you.

[@SatyamKumar-cr7jd]

Everything is tough until you get a teacher like shrenik sir ♥️

[@srikanththogari5983]

Simply Superb broo.... No where I found simple like this..... Thanks

[@ShrenikJain]

Welcome 😃 Share with your friends too 🙂😃

[@706_alishr7]

I don't know a single thing in signal and system ...but after seeing ur videos I can easily understand...Thank u...sir.....really thank u...This is the clear explanation I have ever seen...🙏🙏🙏thank u...so so much sir...

[@abdullahyousef6308]

bro... i hope you are very happy with your life and i hope you get everything you ever want. If university professors explained stuff like this, we wouldnt be this stressed. stay blessed! and thank you!

[@andrearson2748]

Your explanations are so clear! Thank you! There aren't many videos on KZbin in English that explain this well as you do. I appreciate this :)

[@ShrenikJain]

Andre Arson thanks 🙂

[@andrearson2748]

If you don't mind me asking, what other Signal & System topics are you covering next?

[@ShrenikJain]

Andre Arson recently uploaded this correlation topic : kzbin.info/www/bejne/jHrVgaWKZryUi8k if you want some imp topic too you can comment 😃

[@ShrenikJain]

+Andre Arson Linear and non-linear systems kzbin.info/www/bejne/qWnYq3-Aj698aqM

[@codewithcodemon8978]

Hn

[@ShrenikJain]

ANY DOUBT ? ASK ON FB page . facebook link : facebook.com/studysimplified/ quora link : www.quora.com/profile/Shrenik-Jain-51

[@hamadalsuwayan9053]

thank you for your clear explanation .. we need in stability

[@ShrenikJain]

Hamad Alsuwayan 😃😃

[@nitika8809]

y(t) = x(t/2) Please explain this question as well. As it should be causal but the answer is non causal.

[@MrRafay474]

Thank you brother , I was confused in unique cases and you clear my doubts

[@safeegull22]

Thanks, you solved out my problem

[@anantsharma7836]

Feels like bhai ki padhai 🎉🎉🎉❤❤❤❤❤❤

[@Ammar.youtube]

The system y(n)=x(n)+x(-n) is .................. system Linear causal Nonlinear causal Linear noncausal Nonlinear noncausal

[@MuhammadZeeshan-yg3ky]

It is linear and noncausal due to x(-n) term. If you like the answer, please watch the following video and subscribe our channel. kzbin.info/www/bejne/iKGkdGWdpZdpd8k

[@anupmhatre2881]

Thank u sir I see your all videos all are the knowledgeable all are very helpful...

[@ShrenikJain]

Anup Mhatre Your appreciation for the work means alot man 😃😃😃. Do share with your friends too 😊😊

[@aadeshatkare1175]

Thank you very very much sir 😊

[@vishwaksen395]

bro your explanation is superb which textbook did you follow?

[@abhishekvishwakarma1193]

Good concepts sir , thanks for a help u

[@deekshachandwani9680]

in example y(t)=x(2t), if we check for -1 we get causal, explain plz.

[@sscpointview]

Present +past + future

[@tarunss2909]

Non causal system trick is any one future is there its a non causal dont think about next😊

[@nijam_eyy_nayya_pulla_rao]

if the system is only in past then is it causal or non causal like y(t)=ax(t-b)

[@cassie9950]

causal. The system fails the causal test if it depends on the future: y(t)=ax(t+b)

[@avantikakala1241]

Tysm bro ur amazing, ur way of explanation is superb, u simply explain everything, it's very helpful 🤞

[@harshadasari6063]

Sir I have one doubt if -1 is present then -0 is future or past???

[@ruchikawadhwa2789]

All these videos are very helpful..thankyou

[@TheAbdul011986]

a perfect man. hats off u sir

[@zakiahmad8561]

Crystal clear video , thank you so much sir

[@traptikolankar4802]

really ur video is very helpful for me I can easily understand what is actual meaning of this system thank u nd make more this type of video's😊😊😊😍

[@Happy-2d2]

Bhai starting of video is nice.. 4 brr dekha mne😂

[@BibhasitoBiddut]

Very much helpful as well as clear.

[@ShrenikJain]

Bibhasito Biddut 😃 thanks share with your friends too 🙂🙂

[@ersunnykumar4661]

Thanks brother

[@impunitkmr]

Bhai apne bus simple example but if fiction integration me to kya karege ?

[@VidyutW]

Thanks

[@elmusk424]

If the equation is x(t) = x(2t) if you put t = -1 then you get x(-1) = x(-2) isnt that present and past? so wouldnt it be causal?

[@junaidsarguroh3076]

sir you said in the last example that you should apply three values(positive, negative, 0), but why didn’t you apply t=-1 in this question y(t)=x(2t)...you just apply t=0 and then after that t=1...we could put t=-1 and then the answer would be causal..Please help.

[@melvincool97]

perfect explanation, thank you. Please upload more videos. you are doing an amazing job

[@ShrenikJain]

MORE VIDEOS :) kzbin.info/aero/PLfP-D1tg0DI2Fpj_oV4VvLax4JJVL_kW2 If you find them useful ,SHARE with your friends too :)

[@melvincool97]

wil do brother

[@InaamRehman98]

SIR i have a little bit cofusion... in the examples where we get only present condition ....... instead of putting psitive x value we put negative x values just like x=-1 then we didnt get the same answer ...soo plzz explain it sir

[@ShrenikJain]

you put any value like positive 1,2,3,4 or negative -1,-2,-3 or 0 it remains PRESENT state only

[@swatishah5702]

Very nice video🤩

[@thevlogsofpriya]

Your explanation can reach all of the students ...thanks for Ur video sir

[@ShrenikJain]

Welcome Keep learning keep sharing 😊

[@berkeerol]

At 5:13 if we take t=(-1) , then the equation would be like y(-1)=x(-2) therefore it would be causal since we get the past value. Right?

[@mominbhat1752]

That is also present value...

[@rahulpanchal2213]

now I cleared all doubt... thanks.

[@ShrenikJain]

Rahul Panchal welcome 😃 share with your friends too 😊 😊

[@rahulmaurya2558]

Magnificent explanation! Great job 👍

[@riyateri810]

What does ANTI-CAUSAL system mean then?

[@nareshpulluri49]

Good explanation This video helped me in my exams Thanks ❤️

[@Deepakkumar-zt3wm]

please give examples related to delta function.

[@lb409akhil6]

Bro what if the system contains all only past values ??

[@amarnathbr3420]

Excellent work bhai

[@ShrenikJain]

Ty Keep learning keep sharing 😊

[@GyanVarsha94]

y(t) = x(t) + u(t+1) is causal or non causal

[@lakkisai2257]

Very well explained. Thank you soooo much

[@somendutta182]

easy and good explanation...thanks ...

[@ShrenikJain]

somen dutta Ty😃😃 Share with your friends too 😊 😊

[@DeVeshShinde]

Thanks bhai

[@yanghao5497]

what if y(n)=x(-n)? when n=1, is depend on the past but when n =-1, is depend on the further.

[@MuhammadZeeshan-yg3ky]

Dear, the point is that causality must be satisfied for all times. Due to this reason, the above system is non causal. If you like the answer, please watch the following video and subscribe our channel. kzbin.info/www/bejne/iKGkdGWdpZdpd8k

[@anandchitchat6411]

one more type in continuous or discrete for multiple input and multiple output example:- y(t+3) +y(t-1)=x(t+2) +x(t-4). causal Or non-causal. Thanks for help ,very useful. if possible please bring different types of problem for each topic .

[@ShrenikJain]

+ANAND CHITCHAT You can watch playlist for more topics 😇. The example you mentioned is Non causal system

[@anandchitchat6411]

Thanks for quick reply, now as per example | understood we should consider y(t+3) first then y(t-1) and check whether input x(t+2) + x(t-4) satisfies causality condition or not , if any one case fails then we consider it non- causal . Am | correct , please reply..

[@ShrenikJain]

+ANAND CHITCHAT Check relationship between output and input.. At t= some value.. Where is input ( past , present or future) with respect to output

[@anandchitchat6411]

Thanks for explanation :)

[@sainareshkumar7504]

Thanks man ...very nicely explained

[@chandanamogalli1]

thanks a lot man. it was very useful❤❤❤

[@ShrenikJain]

welcome

[@justme143K]

thank you! best explanation video I can find:)

[@ShrenikJain]

Chris Phua welcome 😃 share with your friends too 😊😊

[@rajuu_t]

If it is past and future...then system is what ❓

[@unfinishedgenius3791]

So glad I found this. Thanks!

[@ShrenikJain]

welcome :)

[@debaratidasgupta752]

just awsm

[@bhavanahr6230]

Tqsm... For making it soo easy

[@yasripsayem1444]

if i take t=-1then we get y(t) = x(2t) is causal if take t= 1 then it'll non causal

[@mohitkashyap6748]

Thanks for precious knowledge

[@ShrenikJain]

Welcome 😄 share with yourself too 😄

[@bhukkal24]

sir y(t)=t.x(t) after putting all 0,1,2 it shows the present past and future value but you dictate it only present type. how it can plz explain

[@harithaammu9212]

I also have doudt in this

[@KashmiriSquadX]

Thanks a lot

[@ShrenikJain]

Welcome :) Keep learning keep sharing 🙏♥️

[@yamanrajab349]

thank you very much

[@ShrenikJain]

yamanrajab welcome 😃 Share with your friends too 😃😊

[@prasanjitdey1490]

y(t)=2x(t)+3 It's a causal or non-causal !!!!

[@harishchandrakohre6662]

Nice vidie

[@ppayalpurushottamshinde]

It helped me a lot 😊

[@moisesnavarro1051]

what about trig functions, e, log, rect, tri, sawtooth?

[@ShrenikJain]

+Moises Navarro They can be solved using same logic 😃

[@kajalamalla8019]

Nice

[@rutujapatel8738]

Thank you so much for explaining. I have a doubt Why didn't you take negative value for t in: y(t) = x(2t) ?????

[@ShrenikJain]

You can take But since you get case of future Ans is non causal

[@DineshKumar-qd6ie]

Y(t) = x(t/2) is it causal or non causal .for -ve value y(t) depends on future value but for +ve ,y(t) depends on future value ,so is it casual or non causal? according to your concept it is non causal but the correct answer is causal.explain please

[@ShrenikJain]

correct answer is NON CAUSAL... You have studied r8 :)

[@faysalahmed1328]

thank you sir

[@pankitshah9756]

What if there's an only past value?

[@phatnguyenable]

at 8:02 i thought t= 2 , y(2)= 2x(2) = 4 , which becomes future. not present. please explain

[@phatnguyenable]

please explain. i really love your videos. every video i watch from you. i always click like

[@ShrenikJain]

2x(2) is not 4

[@wareshakhan5740]

Sir kindly explain : In X(-t) you checked for ( t=0, +ve, -ve ) values... while in X(2t) you only checked for ( t=0, +ve ) values if here take t= -ve then it will also give past values .. and will contain all states?

[@ShrenikJain]

waresha khan Whenever we get future value it is fixed that ans is non causal... We can do all states as well as you said but ans is still Non-causal because of future value

[@wareshakhan5740]

Thank You so much Sir for clearing it,,, Now I got the point..

[@ShrenikJain]

waresha khan Welcome 😃

[@jayprakash6657]

Nice Sir. ..upload more videos

[@kaustubhd562]

Thanks! It helped me😊

[@ShrenikJain]

Kaustubh Dhotre welcome 😃 and share with your friends too ☺️☺️

[@Sifat068]

that was a really really nice concept.tnx

[@ShrenikJain]

sifat ahamed 😃😃 welcome share with your friends too 😃

[@SaurabhSingh-ow5hv]

Why not x(-1)

[@shubhamjha3703]

what if we get only future value or past value

[@ishmamsaleh4615]

AMAZING!!!!!

[@ShrenikJain]

Ishmam Mahmood ty 😃 share with your friends too 😊

[@ishmamsaleh4615]

one question however, why is when t=1 or t=2, tx(t) is present and not future? Aren't future values those moving to the right of the x axis?

[@ShrenikJain]

Ishmam Mahmood y(-2)&x(-2) y(2)&x(2) no delay or adv like y(2)&x(-2) which were present in all equtn except this y(t)=tx(t) future means: y(2)&x(4) present means:y(2)&x(2)

[@ishmamsaleh4615]

So much clearer! Sharing with all my friends for sure! Thank you!

[@ShrenikJain]

Ishmam Mahmood 😃😃 more such videos : signal and system by SHRENIK JAIN: kzbin.info/aero/PLfP-D1tg0DI2Fpj_oV4VvLax4JJVL_kW2

[@emmanuelobay6568]

thanks for the help man this saved me!

[@ShrenikJain]

welcome buddy :) Share with your friends too :)

[@emmanuelobay6568]

do more vids like this man

[@ShrenikJain]

Emmanuel Obay More videos: signal and system by SHRENIK JAIN: kzbin.info/aero/PLfP-D1tg0DI2Fpj_oV4VvLax4JJVL_kW2

[@dipbhowmik4583]

i gave like for the animation in the first span of this video :D

[@ecstasyrealm6803]

Y[n]=2x[2^n] . Is it non-causal since it only depends on future values ?

[@MuhammadZeeshan-yg3ky]

Non causal. If you like the answer, please watch the following video and subscribe our channel. kzbin.info/www/bejne/iKGkdGWdpZdpd8k

[@punks0325]

how to do for discrete signals?

[@ShrenikJain]

Same steps

[@andrearson2748]

At 6:09, what if we did y(-1), wouldn't that make x(-2) and rely on past present and future?

[@ShrenikJain]

Andre Arson yes it would take past value but then it satisfies all states past present and future ,hence it is NON CAUSAL

[@andrearson2748]

Ahh I see. It's like you mentioned in the ending. If a future input value satisfies, then overall its non causal...

[@ShrenikJain]

Andre Arson yeah ur r8 😉

[@andrearson2748]

Say we had: (d^3/dt^3)*(y(t)) + (t^2)*(dy(t)/dt) + 9y(t) = dx(t)/dt - 8x(t).... Wouldn't this be non-causal? I plugged in '0' to the system and get present. Then '1....n' gets future. Is this correct?

[@ShrenikJain]

Andre Arson yes NON CAUSAL

[@neyo509]

specifically at 2:38

[@yashtyagi2098]

Goodjob bro 👌🏻👌🏻👍🏻👍🏻

[@wcgyan]

Thank u brother...

[@ShrenikJain]

Welcome 😃 Share with your friends too 😇

[@salehfarooqui2399]

Very helpful, may I ask what is this system y(t)= X (-2t+1) ?

[@ShrenikJain]

Saleh Farooqui Time variant, Non causal, Linear, Dynamic

[@salehfarooqui2399]

Wow quick reply, thank you Sir, your lectures will give me an A. Studying BE Mechatronics, module: linear systems modelling also S&S.

[@ShrenikJain]

Saleh Farooqui 😃😃 Keep learning, keep sharing 🙂

[@cherukurimeenatejaswi3251]

aww simply superbb bro..:D

[@ShrenikJain]

CHERUKURI MEENA TEJASWI Thanks 😃 Share with your friends as well 😊

[@thezombieguy426]

nice tutoring

[@ShrenikJain]

ty :)

[@SAISRIVIDYA66]

Can we put t=-1 ( even though it's practicallly impossible) for x(2t)

[@ShrenikJain]

+Cherukumudi Saisrividhya Yes we can... But once condition comes future Other condtn doesn't matters ....

[@Superscences4]

super

[@vikendrasingh6713]

what will be,if signal contains past+future value

[@ShrenikJain]

Vikendra singh Whenever future comes in condition ..... Answer is non causal

[@jonny2575]

Sometimes I just stare at my professors when I get lost and they prob think wow I'm getting through! He's listening so intently! When really I'm thinking why are you trying to so intently be as abstract as possible?

[@ShrenikJain]

Jonny I made this video so that you can pass your academic papers easily ... Talking about practical knowledge their exist many videos which are not abstract , so giving same videos like them doesn't make sense

[@jonny2575]

I'm sorry I don't quite understand. I was simply trying to give you a compliment. I study at a nice university but professors like to make things complicated and I love how your video made it SIMPLE to understand this particular topic. I think you're doing a great job, and I hope to see more!

[@ShrenikJain]

Jonny I thought 'you ' in your comment meant for me 😓 ... Sry my bad 😥 Thanks for appreciating my work😃😃

[@pujaprabhakar1542]

e 2t u(t) is causal or not?

[@ShrenikJain]

Causal

[@pujaprabhakar1542]

Shrenik Jain thank youuuu sir But how

[@abhishekpaul7703]

what is anticausal system?

[@ShrenikJain]

anticausal: kzbin.info/www/bejne/ZqC8o5uhbduKfJY&list=PLfP-D1tg0DI1VEDhEOVNHrTs_pzt684ou&index=10

[@adnanakbar352]

alla larka

[@entertainlogy8360]

Bro is this values r same fr all dynamic and static systems r not

[@ShrenikJain]

Venky Virat Kind off... If output and input is same for ever at any point means static

[@entertainlogy8360]

Shrenik Jain thanq bro

[@prasanjitdey1490]

Sir plz reply 🥺