Mathematics
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OpenStudy (anonymous):
What are the horizontal asymptotes of the logistic growth function f(x)=3/(1+6e^(-2x))?
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OpenStudy (anonymous):
@jim_thompson5910
OpenStudy (amistre64):
what does e^-inf go to?
jimthompson5910 (jim_thompson5910):
Basically, as x gets larger and larger, what happens to e^(-x)?
OpenStudy (anonymous):
Does it get smaller?
jimthompson5910 (jim_thompson5910):
yes it does
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jimthompson5910 (jim_thompson5910):
so as x gets really really really big, e^(-x) gets really really really tiny...effectively making e^(-x) zero
OpenStudy (anonymous):
@swimgirly95 there was an error in your last question
range is all real numbers
jimthompson5910 (jim_thompson5910):
So this means that as x gets bigger and bigger, e^(-2x) gets smaller and smaller (using the same logic)
OpenStudy (anonymous):
Okay =)
jimthompson5910 (jim_thompson5910):
so what does that say about the horizontal asymptote?
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OpenStudy (anonymous):
I believe it is saying that it will be larger than the verticle one?
jimthompson5910 (jim_thompson5910):
well in this case, there are no vertical asymptotes
OpenStudy (anonymous):
Because y=0, right?
jimthompson5910 (jim_thompson5910):
no because you can plug in any real numbers
jimthompson5910 (jim_thompson5910):
well as x --> infinty, y --> 3 since 6e^(-2x) ---> 0
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jimthompson5910 (jim_thompson5910):
So one horizontal asymptote is y = 3
jimthompson5910 (jim_thompson5910):
as x --> -infinty, y --> 0 since 6e^(-2x) ---> infinity
jimthompson5910 (jim_thompson5910):
So another asymptote is y = 0
OpenStudy (anonymous):
okay dokey, sorry, I think I see it now =) THANK YOU!!
jimthompson5910 (jim_thompson5910):
you're welcome
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OpenStudy (anonymous):
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