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LynaLiliLola26032202
@LynaLiliLola26032202
January 2021
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Bonsoir
s'il vous plait aider moi pour trouver la limite des trois fonctions composées
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anylor
Bonjour
1)
g o f = g(f(x))
= 1/ [(x²-1) -1] = 1/(x² -2)
hogof = h (gof)
= √ [1/(x² -2)] +1
limite en + ∞= 1
limite en - ∞= 1
2)
la fonction composée est associative on peut écrire
gofoh = (gof)oh
on a vu que gof =1/(x² -2)
gofoh =1 / [(√x +1 )² -2]
= 1/ (x+2√x+1-2)
gofoh = 1/ ( x+2√x -1)
limite en + ∞= 0
limite en - ∞= 0
3)
fo(gof)
gof = 1/(x² -2)
f [( gof(x) ] = [1/(x² -2)] ² -1
= 1/ (x²-2)² - 1
limite en + ∞= -1
limite en - ∞= - 1
4)
gohof
hof = h(fx)
= √(x²-1) +1
g[ hof(x) ] =
1 / [ (√x²-1) +1 -1]
= 1 /(√x²-1)
limite en + ∞= 0
limite en - ∞= 0
2 votes
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S'il vous plait j'ai un dialogue en anglais et j'ai besoin d'une correction d'orthographe et tout. Stephen : Mum , dad , I want to tell you something. It's important. Ayse (M): Hum Louisa (F ) : Yes , tell us. We all ears Stephen : So... I'm leaing to the United-states and I want you to come with me Louisa (F )+ Ayse (M) : What !!! Stephen : I have a project there. I want to fulfill my dream and I need your presence. It means a lot to me . Louisa (F )+ Ayse (M) : Are you kidding ? Stephen : NOO , I'm serious. I read in books and newspaper that a lot of people get fortune thanks to the gold rush. Ayse (M): Oh dear , dont trust everything you read in books. Most of them is not real. Louisa (F ) : Your mum is right. Books don't always reflect the reality. Stephen : And who do you know ? Did you even try ?Let's do it . I'm one hundred per cent sur that we will be rich and we will have a better life. Louisa (F ) : Sun , it's not so simple. Do you know all the obstacles that we will have to face there ? And do you know how difficult it is to live in an other country ? You must get used to their culture , you know ? Ayse (M): And did you even once thought about your sister ? She wants to stay here. Andd , and you friends. They are going to miss you so much. You are so popular , you absence will not going to be unnoticed Stephen : But mum , dud , it's United states. The country of freedom. They are open minded unlike here. We will never feel that we are stranger. In adds , I learned English. Louisa (F ) : Everybody has a dream : Some people will achieve them beacause they are very lucky and authers not because they aren't. Stephen : And I'm part of the lucky one. Please come one. The landscapes are beautifull , wonderfull.I still see the photos of the skyscrapers. I'm sure if you see it you will change your mind. Ayse (M): Whey you don't like Germany?Our country also has beautifull landscapes. Stephen : Mum , I just see stones, trees and houses. Do you know what ! I will go alone. I will fulfill my dreams no matter what , with you or without you. I will not anyone breaks my dreams. I'm not a daydreamer.
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Lista de comentários
1)
g o f = g(f(x))
= 1/ [(x²-1) -1] = 1/(x² -2)
hogof = h (gof)
= √ [1/(x² -2)] +1
limite en + ∞= 1
limite en - ∞= 1
2)
la fonction composée est associative on peut écrire
gofoh = (gof)oh
on a vu que gof =1/(x² -2)
gofoh =1 / [(√x +1 )² -2]
= 1/ (x+2√x+1-2)
gofoh = 1/ ( x+2√x -1)
limite en + ∞= 0
limite en - ∞= 0
3)
fo(gof)
gof = 1/(x² -2)
f [( gof(x) ] = [1/(x² -2)] ² -1
= 1/ (x²-2)² - 1
limite en + ∞= -1
limite en - ∞= - 1
4)
gohof
hof = h(fx)
= √(x²-1) +1
g[ hof(x) ] =
1 / [ (√x²-1) +1 -1]
= 1 /(√x²-1)
limite en + ∞= 0
limite en - ∞= 0