Added: 2 years ago
From: khanacademy
Views: 35,075
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  • Thanks so much!!!

  • why are we doing this!??? what have our lives been reduced to!!!???

  • Sorry that I am still confused with some parts? Could anyone help me to answer it a little bit?

    Why L( sin t ) = 1 / (S^2 + 1) ? And why L( cos t ) = s/ (S^2 + 1) ? What is the defination of Laplace function L( )? And what is the relationship between t and S ?

  • @eglxiang You should watch the first's videos in the playlist of DE's, then this must become more clear for you.

  • @eglxiang by the definition of the Laplace transform, that's what they're equal to.

  • Thanks Sal for the videos I am doing / reviewing convolution as part of my Digital Systems/Engineering class i think the quiz is today on Convolution. this really helps me a lot thanks.

  • The only thing danker than differential equations is well, a dank nug. However, solving Laplace transforms comes in a close second.

    dank on, salman

  • thumbs up if you now eat convolutions for breakfast

  • thanks a lot for everything, i love science and engineering, but more for all, i love learning and what better way than via internet, this is for all those people who say internet is full of garbage, well is full of usefull information too. i just wanna make a question do you have Z-transform?, cause i like that subject in particular.

  • A bit slow, Id say, but good.

  • great teaching, thank you very much. worth 10x more than my book and class put together

  • great teaching. would advise you to write on whiteboard with black, much easier to understand and read

  • dude, don't worry about colours. I think use of 2 color max shd be fine.

  • HCI1964

    you are an excellent tutor. thanks for the enlightenment!

  • could you please make a video about the Gamma function and its relation with the Laplace transform??thanks a lot in advance man!

  • ...how come i can rarely get ANY of your videos to display more than blank screen, this seems to happen more often than not. does anyone have any info on how to resolve this problem? :(

    btw, the videos that decided to work were very informative, especially since my professor's English is kinda rough, thanks for the vids!

  • I got A on my ODE class test thanks to you man... just one night of watching your videos. And this type of problem was the one that only few solved in my class.

  • good vid, thanks!

  • this really helped, thanks!

  • I agree, fourier would have been great! and something on the erfc and erf.

  • this is good , wish to know if you have fourier series and transform in here , cause i have a test of that next week, you are trully really helpfull

  • ferovac ;)

  • @champignones +1 vote for Fourier Transform!

  • @champignones I second that! Can you please post some videos on Fourier Series and Transform? Thanks for all of your help!

  • @champignones ya power series pls.. expeciallyfrobenius

  • Intuition?! Convolution gives a third function.

    One interpretation of convolution is weighting a function (f-τ) depending on time with another function (g).

    The function value of the function (g) in τ says how strong the value less than τ of the weighted function - means (f-τ) - goes into the result function (third function) in point of time t.

    It has similarity with moving average.

    More intuition for this would be great, Sal.

    Good video.

  • Great job. Thanks.

  • Crikey.

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