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770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
391,270,706,186,420,200
illuminator3
02/19/2022 07:41:16
wouldn't every point on the unit circle be an ap
1
0
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770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:41:22
not necessarily
0
1
null
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null
null
null
770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:41:24
Let b = pi
0
1
null
null
null
null
null
770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:41:30
Then what will our AP's be?
0
1
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770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:41:34
oh wait
0
1
null
null
null
null
null
770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:41:36
aaaaa
0
1
null
null
null
null
null
770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:41:42
x is real?
0
1
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null
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null
null
770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
391,270,706,186,420,200
illuminator3
02/19/2022 07:41:44
yes
1
0
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null
770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:41:47
ahaha then indeed
0
1
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770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:41:49
that is true
0
1
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770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:41:54
But for a second, suppose x is integer
0
1
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770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:42:13
so we have a sequence of points e^{bi}, e^{2bi}, e^{3bi}, ...
0
1
321,445,119,171,756,000
Shuri2060
9525
a μ-er
false
770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
391,270,706,186,420,200
illuminator3
02/19/2022 07:42:17
yes
1
0
null
null
null
null
null
770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
391,270,706,186,420,200
illuminator3
02/19/2022 07:42:25
because it's pi
1
0
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null
770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
391,270,706,186,420,200
illuminator3
02/19/2022 07:42:26
so just
1
0
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770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
391,270,706,186,420,200
illuminator3
02/19/2022 07:42:33
e^pi*i and e^2pi\*i
1
0
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770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:42:39
right
0
1
null
null
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null
null
770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:42:43
that is 1 and -1
0
1
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770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:42:47
(-1)^n is our sequence
0
1
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770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
391,270,706,186,420,200
illuminator3
02/19/2022 07:42:48
because sine and cosine have an interval of 2pi
1
0
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770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
391,270,706,186,420,200
illuminator3
02/19/2022 07:43:07
wdym
1
0
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770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:43:10
$$re^{i\theta}$$
0
1
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770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:43:14
Are you familiar with this form?
0
1
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null
770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
391,270,706,186,420,200
illuminator3
02/19/2022 07:43:16
yes
1
0
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770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:43:18
Theta is the argument
0
1
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770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
391,270,706,186,420,200
illuminator3
02/19/2022 07:43:27
cos(theta) + i * sin(theta)
1
0
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770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
510,789,298,321,096,700
TeXit
02/19/2022 07:43:33
**Shuri2060**
https://cdn.discordapp.c…119171756033.png
321445119171756033.png
0
1
null
null
null
null
null
770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:43:35
Its actually this, but r = 1 for us
0
1
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770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:43:42
But think about just theta
0
1
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770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:43:53
we go 0, pi, 2pi, 3pi, ...
0
1
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770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:44:04
ie. we flip between 0 degrees and 180 degrees
0
1
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770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:44:07
Which is 1 and -1 on the argand plane
0
1
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null
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770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:44:23
hence, I get (-1)^n as our sequence
0
1
321,445,119,171,756,000
Shuri2060
9525
a μ-er
false
770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
391,270,706,186,420,200
illuminator3
02/19/2022 07:44:37
ohhhh
1
0
null
null
null
null
null
770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
391,270,706,186,420,200
illuminator3
02/19/2022 07:44:37
yes
1
0
null
null
null
null
null
770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
391,270,706,186,420,200
illuminator3
02/19/2022 07:44:38
right
1
0
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null
null
null
null
770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
391,270,706,186,420,200
illuminator3
02/19/2022 07:44:46
I forgot that -1^even number = 1 for a second lol
1
0
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770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:44:58
If theta = pi/2
0
1
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770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:45:02
We have 4 AP
0
1
null
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null
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null
770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:45:08
1, i, -1, -i
0
1
null
null
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null
770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:45:27
I'm trying to get the point - if we have a rational multiple of pi, our AP will be finite
0
1
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help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:45:31
And in fact, the roots of unity for some n
0
1
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770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
391,270,706,186,420,200
illuminator3
02/19/2022 07:45:42
roots of unity?
1
0
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770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:45:43
$z^n=1$
0
1
null
null
null
null
null
770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
510,789,298,321,096,700
TeXit
02/19/2022 07:45:45
**Shuri2060**
https://cdn.discordapp.c…119171756033.png
321445119171756033.png
0
1
null
null
null
null
null
770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:45:49
Ah maybe you have not come across this
0
1
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770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:45:53
All the solutions z to this polynomial
0
1
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770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
391,270,706,186,420,200
illuminator3
02/19/2022 07:46:28
hm
1
0
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null
null
null
null
770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:46:37
https://cdn.discordapp.c…8776/unknown.png
unknown.png
0
1
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770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:46:47
Visually, the points will lie on the unit circle
0
1
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770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:46:51
equally spaced out
0
1
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770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:47:00
so if you join them up, you get a regular polygon
0
1
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770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:47:01
with n sides
0
1
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770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
391,270,706,186,420,200
illuminator3
02/19/2022 07:47:02
so every point on the unit circle is a root of 1?
1
0
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null
null
770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:47:13
Not quite
0
1
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null
770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:47:18
You can have an 'irrational' point
0
1
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null
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null
770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:47:21
If you see what I mean
0
1
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null
770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:47:34
If you have like $\pi\sqrt 2$
0
1
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null
770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
510,789,298,321,096,700
TeXit
02/19/2022 07:47:42
**Shuri2060**
https://cdn.discordapp.c…119171756033.png
321445119171756033.png
0
1
null
null
null
null
null
770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:47:43
As your angle
0
1
null
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null
770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:47:57
No matter how much you exponentiate the number (ie. add the angle to itself)
0
1
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770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:48:00
you won't get to 1
0
1
null
null
null
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null
770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
391,270,706,186,420,200
illuminator3
02/19/2022 07:48:14
that makes sense
1
0
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null
null
null
770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:48:18
So back to AP
0
1
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null
770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:48:23
The definition is broader
0
1
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null
770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:48:31
If I have a point P
0
1
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770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:48:42
It is an AP if we get **arbritrarily close** to it an infinite number of times in our sequence
0
1
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770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:48:55
We don't actually have to hit it - we have to get as close as we like
0
1
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null
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770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:49:02
This is slightly harder to understand
0
1
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null
null
770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
391,270,706,186,420,200
illuminator3
02/19/2022 07:49:05
what does arbitrarily close in this context mean
1
0
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770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:49:10
So... its like this
0
1
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770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:49:17
You tell me a point P
0
1
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770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:49:29
Then I draw a circle around P, any size I want
0
1
null
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null
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null
770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:49:43
Then if an infinite number of points in the sequence lie inside that circle, you 'win'
0
1
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770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:50:24
If you win no matter what circle I draw,
0
1
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770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:50:25
P is an accumulation point
0
1
null
null
null
null
null
770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
391,270,706,186,420,200
illuminator3
02/19/2022 07:51:15
so if we draw a circle around 1 with radius h as h -> 0, it would be an ap when talking about our sequence ((-1)^n)?
1
0
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770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:51:25
indeed
0
1
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770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:51:36
This is an obvious case because we keep hitting the point 1 itself
0
1
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null
770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:51:37
$e^{i(\pi\sqrt2)n}$
0
1
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null
null
null
770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
510,789,298,321,096,700
TeXit
02/19/2022 07:51:39
**Shuri2060**
https://cdn.discordapp.c…119171756033.png
321445119171756033.png
0
1
null
null
null
null
null
770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:51:45
For this sequence where n is an integer
0
1
null
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null
770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:51:55
We don't actually necessarily hit every point of the unit circle
0
1
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null
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770
help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:52:01
But we **do** get arbritarily close
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07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:52:12
So for this example, the entire unit circle is a set of accumulation points ===============
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07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:52:34
Well anyways --- this kinda detracts from your original question where we don't have a sequence
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07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:52:36
But a function
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07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:52:42
x -> infinity, so x is allowed to be real
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07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:52:51
In which case you do visit every point
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help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:53:10
=== So how do limits and AP relate? When there is exactly 1 AP, then a limit exists.
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07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:53:19
If there are more than 1, no limit exists (divergence)
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07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:53:42
If the AP is infinity, then the limit also doesn't exist in C, and we consider it to diverge, too
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07fac3c5fb2449ab82562d5b132c3ff1
391,270,706,186,420,200
illuminator3
02/19/2022 07:55:20
wait
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07fac3c5fb2449ab82562d5b132c3ff1
391,270,706,186,420,200
illuminator3
02/19/2022 07:56:00
it converging depends on what b is?
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07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:56:07
https://cdn.discordapp.c…706186420224.png
391270706186420224.png
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07fac3c5fb2449ab82562d5b132c3ff1
391,270,706,186,420,200
illuminator3
02/19/2022 07:56:08
because if b is e.g. 1 we have infinitely many aps
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07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:56:16
If b = 0
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07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:56:27
Then we have just 1 AP, aka 1
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07fac3c5fb2449ab82562d5b132c3ff1
391,270,706,186,420,200
illuminator3
02/19/2022 07:56:30
then it's just 1 yeah
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help-10
07fac3c5fb2449ab82562d5b132c3ff1
321,445,119,171,756,000
Shuri2060
02/19/2022 07:56:38
But think about other b
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