Doubt: In the 2nd example. where we have a composite signal. Does the order matters? For example: x1(t)= sint + cost and x2(t) =cost+sint , are both x1(1) and x(2) signals different?
I' ve watched previous videos, but I didn' t find any reference to the arguments treated in the 2nd part of this video (ratio, LCM, ...). Are they treated in another playlist?
Sir, could you please tell me the answer in this question sir Find whether the signal f(t)=10sin12(πt)+2u(t) is periodic or not?if periodic what its fundamental period could please tell the in this problem answer sir
Sir ! Please suggest me some good reference books for my academic purpose for signals and systems, and linear system analysis I'm a student of electronics and communication Engineering !
dear sir there are may major problems that what your teaching here, its available all in book but when that comes to the exam problems then actually it became a lot difficult. Please try to post problems generally based in exams . thank you
On working sin(4πt)*sin(4πt) you will be getting time period as 0.5. 0.5 is also a time period but not fundamental time period(fundamental time period as in video is 0.25 and 0.5=2x0.25). While solving we must try to reduce the given term as nonsquare (as in this case), if we are not able to do so we can then follow the conventional method.
Sir plz provide solutions for this discrete time system input x[n] and output y[n] .y [n] =x[ n] x[n-2] is the system memoryless( 2)determine output of system when input is A∆{n} where a is real no (3) is the system is invertible
Can you write the whole problem please? What you want from x(t) = 2cos(2t+pi/5) If you want to calculate fundemental period of this signal it is easy to see actually fundemental period of this signal is 2pi/2 which means 1
And also x(t) =e(3+j)t for this signal if you can not see directly you can use euler's formula and change the signal from exp to sin and cos than it will be easier to see
We are trying to find LCM of (1/3 & 2/5) and that's equal to LCM(1&2) / HCF of (3&5) ✓Numbers inside the brackets are different I hope this explanation was useful for you ☺️
6t1 = 5t2 =T
T = 6*t1 =6*(1/3) = 2 sec
T = 5*t2 =5*(2/5) = 2 sec
you can use nT1 Or nT2 (WHERE M & N IS RATION OF T1=m AND T2=n)
Just dropped by to encourage you to continue doing this. Your explanation is simply amazing. Thank you.
Thanks for the video! Helped me greatly with understanding my University assignment. Great job!
How did you calculate LCM & HCF?
U are just fantastic amazing great lecture I loved ur lecturer 🥰🥰😍😍😍
Very good explanation this is what I was searching for end semester exam preparation and it is truly Wonderful content Thank You
DOUBT: In the second example what step should we take if we get Irrational number instead of Rational number???
it is non periodic wht step u will take?
T0 =2pi/w0 (or) T=2pi/w which one is correct?, how to you taken ( w = w0). In x(t)= Sin(6pit) signal ,. w is 6pi, & what is w0?
Find whether the signal given by x (n) = 5cos (6 πn) is periodic.
how to do this one the discrete one?
Thank you sir one doubt Cos8pi.t÷2 therefore omega =8pi÷2 but you wrote 8pi only sir please reply me sir
❤ 🇵🇰❤🇮🇳❤
Wow Sir😊
Niso academy is my all time favorite ...
Lots of love from neighbour.
Thanks sir from Egypt
thank you it was very clear and thank you so much
Doubt: In the 2nd example. where we have a composite signal. Does the order matters? For example: x1(t)= sint + cost and x2(t) =cost+sint , are both x1(1) and x(2) signals different?
no
I' ve watched previous videos, but I didn' t find any reference to the arguments treated in the 2nd part of this video (ratio, LCM, ...). Are they treated in another playlist?
same here..
Sir can't we solve the 1st problem like this sin(4pi t) x sin(4pi t) by taking T1 and T2
that was wrong method in previous example
Yes ,in the prev example , it should be converted from cosAsinB form to sin(A+B)-sin(A-B)...isnt it?
Sin(4pit) x sin(4pit) = sin square(4pit)
Hats-Off Sir...
My Mids will be fine now
Mines too
Do LCM(t1,t2) always give fundentak time period
Could you please explain the aperiodic signals.
Thanks for your explanation sir 😊
Sir how you taken hcm 1,i can't understand
should you check if T2/T1 is also rational?
2 example lcm and hcf how can find
When did you explain the LCM ?
please would you explain shannon formula , and spectrum theorem
if the ratio of t1 and t2 is irrational.... then will the signal be aperiodic?
Can you explain me the meaning of rational & irrational ?
Yes
Yes
@@ahmedrista164rational is where the numbers after decimal repeat themselves again and again, irrational doesn't have this property.
Sir, could you please tell me the answer in this question sir
Find whether the signal f(t)=10sin12(πt)+2u(t) is periodic or not?if periodic what its fundamental period could please tell the in this problem answer sir
Sir... I have one doubt...
In the 2nd prblm.... Why I calculated about T1/T2....
What's it's use in the prblm???
To check whether it's periodic or not ....if periodic then continue with calculating T0...if aperiodic then no need of calculating T0
@@kritikaprasan7591 could you give me the answer for x(t)=sin√2t please!
excuseme sir, in 0:25
can u explain how you get cos2x = 1 - 2sin^2x
thanks at first.
Dwi Novianto It's a basic Trignometric formula
You can check it here 👇
www.mathportal.org/algebra/trigonometry/trigonometric-formula.php
how you take hcf value as 1?
how to solve this question cos(2t - pi/3)^2
in the 1st example why didn't u count the 2 below for counting omega..
shouldn't it be omega=(8pi)/2???
It's because the 2 in the denominator is dividing the entire cosine function...not just the angle.
1/2 is the amplitude
Thank you sir.
lcm of (1,2)=2 and hcf of (3,5)should be 5
Is analog electronics covered full syllabus of both electronic devices and microelectronics
Hi sir how can we find lcm and HCF
so, they are periodic signal both? because their To is rasional number
Sir in the first problem omega value is 8π÷2 right
Thanks mate
Sir what if a composite signal has 3 or more variables how can we find Time period in this case?
Take two at a time and follow the same process. It should work.
Nice video ane explication
Sir,can we solve the first problem by taking the periodic signal condition(x(t)=x(t+T))
can I take sin^2x+cos^2x=1
but my t=0.5 is that correct
Very nice video bro
are the signals sin(t)*u(t) and cost(t)*u(t) periodic?
Please make video lectures on network analysis
What is DC value...........abbreviation of dc?
Sir ! Please suggest me some good reference books for my academic purpose for signals and systems, and linear system analysis
I'm a student of electronics and communication Engineering !
Read this book : oppenheim signals and systems
Refer ramesh babu
How did he calculate LCM and hcf like that
How can we know the given signal is periodic or non-periodic
sir in first lecture you have said that dc values are not signals
dear sir there are may major problems that what your teaching here, its available all in book but when that comes to the exam problems then actually it became a lot difficult. Please try to post problems generally based in exams .
thank you
What are the books followed by your academy
to calculate FTP of sin^2(4πt) can't we do it by writing sin4πt× sin4πt
NO if signals are in product form, we cant find T directly. we should use some formula to convert it to sum form.then only we can find T.
@@saragolden3413 could you give me the answer for x(t)=sin√2t please! I have exam tomorrow 😖
@@shreyasuresh8291 pass
Sir can we take Sin2(4πt) as ----> sin(4πt)*sin(4πt) ?????
RAMIZ AMER CH i have done using that but am not getting the answer..
NO if signals are in product form, we cant find T directly. we should use some formula to convert it to sum form.then only we can find T.
No
Sin2x=2sinxcosx not (sinx)*(sinx)
On working sin(4πt)*sin(4πt) you will be getting time period as 0.5. 0.5 is also a time period but not fundamental time period(fundamental time period as in video is 0.25 and 0.5=2x0.25). While solving we must try to reduce the given term as nonsquare (as in this case), if we are not able to do so we can then follow the conventional method.
hi can you please explain why you took cos2theta identity
What if T1/T2 is irrational?
then it will be Aperiodic
Sir is viedo mai Jo first question apne kar aya hai ye periodic hai kya
yes it is a periodic function.
What is fundamental period of cos(18pit)
How can we say u(t)-(1/2) is periodic r not
If x(t) = 5sin60pit + 6 sin3t + 4cos30pit?
Sir plz provide solutions for this discrete time system input x[n] and output y[n] .y [n] =x[ n] x[n-2] is the system memoryless( 2)determine output of system when input is A∆{n} where a is real no (3) is the system is invertible
Naa dout KetA sola Velingala.
T.saran.
in the second example we can just get the GCF of the 2 omega ( 5 and 6) which will give us 1 and then use that gcf in calculating the time.
What is it is three signals all adding together
How do solved the last step of 2nd example lcm and hcf m confused?
ankita gupta
Me to yaar 🤔
sir i have a doubt what is the fundamental time period of sin^3 (2t)?
can u show the solved answer..? please sir...
It doesn't have a fundamental time period because it is aperiodic(non-periodic) signal
explain the period of signal x(t)= 5t
Shubhasi Gupta Signal is non-periodic
@@anupas4269 could you give me the answer for x(t)=sin√2t please?
lcm of 3 and 5 is 15,isn't it?
Yes
if 1.2+0.6*(cos(500*pi*t-pi/5)??
5/6 is rational because it is a ratio
How we can solve these type problems?
x(t) = 2cos(2t+pi/5) and
x(t) =e(3+j)t
Thank you very much
Can you write the whole problem please? What you want from x(t) = 2cos(2t+pi/5)
If you want to calculate fundemental period of this signal it is easy to see actually fundemental period of this signal is 2pi/2 which means 1
And also x(t) =e(3+j)t for this signal if you can not see directly you can use euler's formula and change the signal from exp to sin and cos than it will be easier to see
@@ahmetcihatbozkurt8769 how it becomes 1? Pi will be the answer correct?
Omega = 8¶/2 ...?
Same doubt
great method of explanation thanks a lot sir..
but w should be 8pi/2 ?
Will these lectures useful for gate
Neso Academy
Thank you a lot
Its helps alot sir.. Thankyou!
Cos^2 3πt
What is retio?
Sir but in earlier presentation you said that x1(t) *x2(t) is composite.. So y you didn't split as sin(4pit)*sin(4pit)
He said x1(t)+x2(t)
How to find non periodic signals?
x(t)=3cos(5t+pi/6) it is not periodic why
I found this useful thing www.math.uri.edu/~pakula/438web/fourier1.pdf
try plotting that waveform 3cos(5x+pi/6) in some online graph plotter like fooplot.com. the signal appears to be periodic.
we have to find out LCM then why we find LCM/HCF ??????
We are trying to find LCM of (1/3 & 2/5) and that's equal to LCM(1&2) / HCF of (3&5)
✓Numbers inside the brackets are different
I hope this explanation was useful for you ☺️
thx
how is 5/6 rational no.??its decimal value is 0.83333333......
Yaa I'm also really shocked......about that .....
It's irretional number so that signal is non periodic
0.83333333 we r getting repeated values of 3333 so its is rational
sir ye periodic or non periodic kaise pahchaaante ha
What about cos^2x
DC value means?
its a average value or a constant value
How you find omega=8pi
shouldn't the second problem be irrational ?
LCM of second example is not right
great
How to find hcf
What about V max
Voise quality is not good, otherwise you are best.
Is 5π/2 periodic
Write big letter please
Himadri spotted
You are godsent and I say that being an atheist!
HCF should be 15
its lcm would have been 15 but hcf means highest common factor between (3,5) which is 1
??? The divisors of 3 are 1 and 3 and 5’s are 1,5. The maximum number in common between (1,3) and (1,5) is 1.
Dude you confused lcm, hcf
Kosomak