Posts

Transformada de Laplace

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Hola: Bienvenidos a esta serie de tutoriales en los que se resolverán ejercicios de la Transformada de Laplace, empezando por la forma mas básica hasta ir llegando a tópicos mas avanzados. Pues bueno, aquí vamos!!! Transformada de Laplace, primer teorema de traslación  Calcular las transformadas tales como  L  {e 5t t 3 } o  L  {e -3t cos4t} resultará sencillo siempre que conozcamos  L  {t3} o  L {t 3 } o  L {cos4t} cosa que conocemos   y   respectivamente. En general, si conocemos  L {f(t)}=F(s) es posible calcular la transformada de  L aplace de un producto exponencial de la funcion f es decir  L {e at f(t)) sin ningun problema que el de  trasladar  o  desplazar  F(s) a F(s-a), este resultado se le conoce como  Primer teorema de traslación. Para realizar esta operación se utilizará: L {e at f(t))=  L {f(t)) s ➝( s-a) (donde veas una “s”, pon “s-a”)

Week from 10-14 November

Hello!!! Here is Johnny again, I would like to talk about how this last week was. Monday: I have a very good class with teacher Lora, in the evening, I went to northgate mall, this mall is bigger, I felt surprised Thursday: Today is the veteran's day, I got surprised because is a really big celebration surrounding this day, I think is great to give a tribute to all the heroes which give freedom to people. I went with my friend Ale to green lake, It is a very nice place, so green, with an amazing view, and we ate a really tasted hamburger whit fried potatoes, we discovered, that sweet potatoes is a kind of "camote" Wednesday: I was in class with teacher Lora, I presented my neighborhood visit, I went to capitol hill, I used to talk in front of a lot of people, but, speak only using English, is hardest, because I need to think, and speak in a foreign language, but, when I warmed up, all flows!!!! At the evening we went to Alder Hall, and we got a very nic

This is John

November 05/14 Hello, today I would like to talk about a teacher of the UT (University of Tecamac). This teacher teachs maths: algebra, geometry, calculus and everything which means numbers, almost an artist of numbers!!! He came to the world not so time before, maybe a few years ago (that's no matter), he studied his bachelor in economy at University of Hidalgo, it only takes him five years, he always gets a lot of pain when his subjects depended of explain about theories (capitalism, monetarist, fisioctratasetc...) or thoughts of famous people (Taylor, Keyness, Kalecky, Marx, etc...), but when the subjects were numerical, his brain worked as a well oiled machine. Later he started to tech maths in a private University, was in those times when he felt the call of teaching profession, a little few time more, he got a job at the UT and teached advanced maths, later, he took applied calculus, at the end came differential equations applied, and he feelt really happy. He likes

Rolling in the public market

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November 05, 2014 Hello everybody: This is Johnny, today I'm in Seattle, US. Yesterday (04 November) I went to the public market near in pike place market, this is the picture of the entrance:                                                 At this picture I was thinking the way to get the right path to reach the right way the be in the wall gum. The wall gum is a wall where you can stick your gum, of course only after a while chewing it... Uff, I thought, I never will find this place, at the end of the public market, downstairs, you will find the wall gum, everybody who stay at this place, must stick a chewed gum.                                                           I like this picture, because, as you can see, there is the lake and a Ferris wheel, I hope I be at the wheel, feeling how it go up and go down. Well, I think I have no more to share, for today, maybe tomorrow or later I will write a little few more about this wonderful trip trough this