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Mathematics 24 Online
zarkam21:

Help with this concept (Cobwebbing)

zarkam21:

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Vocaloid:

uh well I suppose you'd start with y = x and y = (your function) on the same xy plane

Vocaloid:

|dw:1538556066595:dw|

Vocaloid:

in this case (0,0) and (0,f(0)) are the same then we'd go (0.25,0.25) and (0.25,f(0.25)) and draw the vertical line between these two points|dw:1538556133474:dw| note: the interval would probably depend on your function though

Vocaloid:

then you'd go to the next value of (a1,a1) and draw a horizontal line then draw a vertical line between (a1 and f(a1)) |dw:1538556235821:dw|

Vocaloid:

anyway you'd keep going with this process until the line y = x and y = (your function) meet at the same point

Vocaloid:

any point(s) where the two graphs intersect, those are your equilibria values

zarkam21:

So its basically building the points onto one another

zarkam21:

and just seeing where they meet

Vocaloid:

yes

zarkam21:

Could you just go over sequencing real quick.

zarkam21:

You just insert the previous term, right?

Vocaloid:

for a recursive sequence yes

zarkam21:

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zarkam21:

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Vocaloid:

a_n+1 is just a notation that means "next term" you don't literally add n + 1

zarkam21:

wouldt it be the same regardless its still going up one?

Vocaloid:

a_n+1 = an^an means start with the first term a1 = 2 for n = 2 "a_n+1" = "a_2" = 2^2

zarkam21:

oh its squaring

Vocaloid:

then for a_3 we repeat the same pattern with 2^2 a_3 = (2^2) ^ (2^2)

Vocaloid:

you need to pay attention to the actual formula a_n+1 = an^an it's the "an^an" part that matters

zarkam21:

so the n+ literally doesnt mean anything you have to pay attention to the expressions adter that?

zarkam21:

okay i see

Vocaloid:

like, "a_n+1" means "the term after a_n"

zarkam21:

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Vocaloid:

yeah for 256^256 you can just leave it like that

zarkam21:

perfect thanks

zarkam21:

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zarkam21:

something like that just to make sure

zarkam21:

for the second one

Vocaloid:

yeah basically

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