Omnimaga
General Discussion => Other Discussions => Math and Science => Topic started by: Michael_Lee on December 08, 2011, 08:27:38 pm
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Ok, I feel really stupid for asking this, but what is the name and general form of an equation that would be like one graphed below? The red line is the graph and the blue lines are two horizontal asymptotes.
It almost sort of like an inverse tan, but I was wondering if there was another equation that would graph to something similar.
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looks like a logistic function to me.
(1/(1+e^X))
where e is [2nd] [divide]
(but don't graph with zstandard, use zoomfit) :)
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I dont know much about graphs. My attempt failed :P
And using parser's I think instead of
(1/(1+e^X))
-(1/(1+e^X)) makes it go in the right direction even though I have no clue what it really does XD
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I dont know much about graphs. My attempt failed :P
is it -4+2[sqroot](X+4) ?/me runs
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No it was
(something)log(x-(something))+(something)
I just randomly guessed since when you said "logistic", I interpreted "use log" for it :P
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No it was
(something)log(x-(something))+(something)
I just randomly guessed since when you said "logistic", I interpreted "use log" for it :P
D:
I was close :P
(compare the 2 graphs)
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I dont know much about graphs. My attempt failed :P
And using parser's I think instead of
(1/(1+e^X))
-(1/(1+e^X)) makes it go in the right direction even though I have no clue what it really does XD
Or 1/(1+e^(-X)), the usual form of the logistic function.
[wikipedia]Logistic function[/wikipedia]
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Yay! I was right!
Can i have a cookie?
...or a post rating?/me runs
EDIT: 900th post!
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looks like a logistic function to me.
(1/(1+e^X))
where e is [2nd] [divide]
(but don't graph with zstandard, use zoomfit) :)
Sweet, a logistic function fits the graph (and makes sense within the context of the problem I'm working with). Thanks!