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
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?
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
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 !
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 ☺️
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
6t1 = 5t2 =T
T = 6*t1 =6*(1/3) = 2 sec
T = 5*t2 =5*(2/5) = 2 sec
Just dropped by to encourage you to continue doing this. Your explanation is simply amazing. Thank you.
you can use nT1 Or nT2 (WHERE M & N IS RATION OF T1=m AND T2=n)
Thanks for the video! Helped me greatly with understanding my University assignment. Great job!
Very good explanation this is what I was searching for end semester exam preparation and it is truly Wonderful content Thank You
How did you calculate LCM & HCF?
U are just fantastic amazing great lecture I loved ur lecturer 🥰🥰😍😍😍
Thanks sir from Egypt
Hats-Off Sir...
My Mids will be fine now
Mines too
thank you it was very clear and thank you so much
Thanks mate
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?
Thank you sir.
When did you explain the LCM ?
Thanks for your explanation sir 😊
should you check if T2/T1 is also rational?
Nice video ane explication
Thank you sir one doubt Cos8pi.t÷2 therefore omega =8pi÷2 but you wrote 8pi only sir please reply me sir
Find whether the signal given by x (n) = 5cos (6 πn) is periodic.
how to do this one the discrete one?
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?
Could you please explain the aperiodic signals.
Sir how you taken hcm 1,i can't understand
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..
❤ 🇵🇰❤🇮🇳❤
Wow Sir😊
Niso academy is my all time favorite ...
Lots of love from neighbour.
How did he calculate LCM and hcf like that
Do LCM(t1,t2) always give fundentak time period
Very nice video bro
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 in the first problem omega value is 8π÷2 right
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
What is DC value...........abbreviation of dc?
2 example lcm and hcf how can find
please would you explain shannon formula , and spectrum theorem
Hi sir how can we find lcm and HCF
so, they are periodic signal both? because their To is rasional number
What are the books followed by your academy
can I take sin^2x+cos^2x=1
but my t=0.5 is that correct
How can we know the given signal is periodic or non-periodic
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!
thx
how you take hcf value as 1?
What is it is three signals all adding together
Please make video lectures on network analysis
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)
how to solve this question cos(2t - pi/3)^2
What is retio?
hi can you please explain why you took cos2theta identity
Is analog electronics covered full syllabus of both electronic devices and microelectronics
lcm of (1,2)=2 and hcf of (3,5)should be 5
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.
are the signals sin(t)*u(t) and cost(t)*u(t) periodic?
Cos^2 3πt
sir in first lecture you have said that dc values are not signals
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
Will these lectures useful for gate
Neso Academy
Thank you a lot
Its helps alot sir.. Thankyou!
What is fundamental period of cos(18pit)
great
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
but w should be 8pi/2 ?
DC value means?
its a average value or a constant value
Sir,can we solve the first problem by taking the periodic signal condition(x(t)=x(t+T))
5/6 is rational because it is a ratio
Sir is viedo mai Jo first question apne kar aya hai ye periodic hai kya
yes it is a periodic function.
great method of explanation thanks a lot sir..
How can we say u(t)-(1/2) is periodic r not
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
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.
What about cos^2x
How to find non periodic signals?
sir ye periodic or non periodic kaise pahchaaante ha
What if T1/T2 is irrational?
then it will be Aperiodic
If x(t) = 5sin60pit + 6 sin3t + 4cos30pit?
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
What about V max
How to find hcf
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 ☺️
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.
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.
lcm of 3 and 5 is 15,isn't it?
Yes
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
How you find omega=8pi
if 1.2+0.6*(cos(500*pi*t-pi/5)??
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?
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
How do solved the last step of 2nd example lcm and hcf m confused?
ankita gupta
Me to yaar 🤔
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)
Voise quality is not good, otherwise you are best.
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.
Omega = 8¶/2 ...?
Same doubt
LCM of second example is not right
Write big letter please
shouldn't the second problem be irrational ?
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?
Is 5π/2 periodic
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.
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
Himadri spotted
You are godsent and I say that being an atheist!
Kosomak
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