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help-10
52228f89cd3c448e8a5e69e656e2b1f6
334,482,942,506,041,340
Zybikron
01/30/2022 13:34:15
Ah, i see the correction
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help-10
52228f89cd3c448e8a5e69e656e2b1f6
261,933,205,387,477,000
riemann
01/30/2022 13:34:50
,w plot -1/16 * x^2 +1/2 for -2.5<x<2.5
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1
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373
help-10
52228f89cd3c448e8a5e69e656e2b1f6
510,789,298,321,096,700
TeXit
01/30/2022 13:34:53
Results provided by WolframAlpha
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help-10
52228f89cd3c448e8a5e69e656e2b1f6
607,584,451,484,188,700
Bug
01/30/2022 13:36:02
hmmm so what does this tell me
0
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null
null
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help-10
52228f89cd3c448e8a5e69e656e2b1f6
334,482,942,506,041,340
Zybikron
01/30/2022 13:36:45
Wait, is the goal to show continuity or to show differentiable?
0
1
null
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null
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373
help-10
52228f89cd3c448e8a5e69e656e2b1f6
607,584,451,484,188,700
Bug
01/30/2022 13:37:08
goal is to find a, b such that the function is c1
0
1
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null
null
null
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373
help-10
52228f89cd3c448e8a5e69e656e2b1f6
607,584,451,484,188,700
Bug
01/30/2022 13:37:18
or rather to check if such a, b exist
0
1
null
null
null
null
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373
help-10
52228f89cd3c448e8a5e69e656e2b1f6
607,584,451,484,188,700
Bug
01/30/2022 13:37:33
however prof said that they *should* exist
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null
null
null
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373
help-10
52228f89cd3c448e8a5e69e656e2b1f6
607,584,451,484,188,700
Bug
01/30/2022 13:37:46
we just gotta find them
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null
null
null
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373
help-10
52228f89cd3c448e8a5e69e656e2b1f6
607,584,451,484,188,700
Bug
01/30/2022 13:38:18
then again if i remember correctly absolute functions are non-differentiable so. I have no idea if that plays anything into this
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373
help-10
52228f89cd3c448e8a5e69e656e2b1f6
334,482,942,506,041,340
Zybikron
01/30/2022 13:38:58
absolute value functions aren't differentiable at 0, this function avoids that point.
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null
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373
help-10
52228f89cd3c448e8a5e69e656e2b1f6
261,933,205,387,477,000
riemann
01/30/2022 13:39:01
The domain is absolutely value. Your functions are quadratic and 1/quadratic
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null
null
null
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373
help-10
52228f89cd3c448e8a5e69e656e2b1f6
334,482,942,506,041,340
Zybikron
01/30/2022 13:39:19
oh yeah, that too
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null
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373
help-10
52228f89cd3c448e8a5e69e656e2b1f6
607,584,451,484,188,700
Bug
01/30/2022 13:39:54
so should a,b exist for this problem? im finding it hard to see if I missed anything
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null
null
null
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373
help-10
52228f89cd3c448e8a5e69e656e2b1f6
261,933,205,387,477,000
riemann
01/30/2022 13:41:17
I think you've proven that it's not C1
0
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help-10
52228f89cd3c448e8a5e69e656e2b1f6
607,584,451,484,188,700
Bug
01/30/2022 13:41:46
right. or that such a, b are nonexistent
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null
null
null
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373
help-10
52228f89cd3c448e8a5e69e656e2b1f6
607,584,451,484,188,700
Bug
01/30/2022 13:41:51
I hope
0
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help-10
cf6aae08cfe649988b5a3b584fbbce7f
255,103,821,657,669,630
Tifenn
01/30/2022 14:21:22
https://cdn.discordapp.c…20130_202021.jpg
IMG_20220130_202021.jpg
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help-10
cf6aae08cfe649988b5a3b584fbbce7f
255,103,821,657,669,630
Tifenn
01/30/2022 14:21:22
https://cdn.discordapp.c…20130_202005.jpg
IMG_20220130_202005.jpg
1
0
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help-10
cf6aae08cfe649988b5a3b584fbbce7f
255,103,821,657,669,630
Tifenn
01/30/2022 14:21:26
Hello
1
0
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help-10
cf6aae08cfe649988b5a3b584fbbce7f
255,103,821,657,669,630
Tifenn
01/30/2022 14:21:32
on the second screen
1
0
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help-10
cf6aae08cfe649988b5a3b584fbbce7f
255,103,821,657,669,630
Tifenn
01/30/2022 14:21:42
where does the (a+b)^2 come from ?
1
0
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help-10
cf6aae08cfe649988b5a3b584fbbce7f
255,103,821,657,669,630
Tifenn
01/30/2022 14:21:55
c = a + b ?
1
0
null
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help-10
cf6aae08cfe649988b5a3b584fbbce7f
193,942,262,336,454,660
KurtDee
01/30/2022 14:24:17
Which line exactly
0
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help-10
cf6aae08cfe649988b5a3b584fbbce7f
255,103,821,657,669,630
Tifenn
01/30/2022 14:27:19
https://cdn.discordapp.c…-30_20-27-03.png
Screenshot_from_2022-01-30_20-27-03.png
1
0
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help-10
cf6aae08cfe649988b5a3b584fbbce7f
193,942,262,336,454,660
KurtDee
01/30/2022 14:31:05
That’s just an identity
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help-10
cf6aae08cfe649988b5a3b584fbbce7f
193,942,262,336,454,660
KurtDee
01/30/2022 14:31:06
Foil
0
1
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help-10
cf6aae08cfe649988b5a3b584fbbce7f
193,942,262,336,454,660
KurtDee
01/30/2022 14:31:41
Oh like where?
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help-10
cf6aae08cfe649988b5a3b584fbbce7f
193,942,262,336,454,660
KurtDee
01/30/2022 14:32:01
Look at the visual of the square in the first page
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help-10
cf6aae08cfe649988b5a3b584fbbce7f
193,942,262,336,454,660
KurtDee
01/30/2022 14:32:08
Length is a+b
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help-10
cf6aae08cfe649988b5a3b584fbbce7f
872,859,024,985,587,800
hiromichi
01/30/2022 14:39:36
i dont understand his question?
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help-10
cf6aae08cfe649988b5a3b584fbbce7f
255,103,821,657,669,630
Tifenn
01/30/2022 14:47:49
ah
1
0
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help-10
cf6aae08cfe649988b5a3b584fbbce7f
255,103,821,657,669,630
Tifenn
01/30/2022 14:48:13
i thougth it was the square in the middle
1
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help-10
cf6aae08cfe649988b5a3b584fbbce7f
255,103,821,657,669,630
Tifenn
01/30/2022 14:48:16
thanks you
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help-10
e8108369a70843c494275c8428d22e1c
313,043,740,547,612,700
Drashig
01/30/2022 15:09:44
Is anyone able to rephrase this question?
https://cdn.discordapp.c…t_2.09.13_PM.png
Screen_Shot_2022-01-30_at_2.09.13_PM.png
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help-10
e8108369a70843c494275c8428d22e1c
313,043,740,547,612,700
Drashig
01/30/2022 15:09:54
I guess I don't get it?
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help-10
e8108369a70843c494275c8428d22e1c
313,043,740,547,612,700
Drashig
01/30/2022 15:30:36
I ended up just sorting the prices low-high, then using =AVERAGE to get the above answer, but was obviously wrong. So I'd imagine the question was just worded horribly?
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KurtDee
5580
KurtDee
false
376
help-10
f9a267b4bc3646f4b2c2dc874e19fae4
920,394,835,809,149,000
Student
01/30/2022 16:33:15
I understand why 6(7^k) is divisible by 6, but i dont understand why 3(4^k) is divisible by 6. could someone please clarify?
https://cdn.discordapp.c…1946/unknown.png
unknown.png
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KurtDee
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376
help-10
f9a267b4bc3646f4b2c2dc874e19fae4
261,933,205,387,477,000
riemann
01/30/2022 16:40:53
4 = 2^2 and k should be >0
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
158,020,687,850,766,340
moritz
01/30/2022 17:15:46
Can someone help me understand open sets? If I have a set A in R^3 where for every element x of A has a surrounding "area" of other elements within a certain distance of x, does this mean there are no limits to the domain of A?
1
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
158,020,687,850,766,340
moritz
01/30/2022 17:16:22
(ignoring complex numbers etc.)
1
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
158,020,687,850,766,340
moritz
01/30/2022 17:17:54
please ping me if you respond, I need to get ready for bed
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
321,445,119,171,756,000
Shuri2060
01/30/2022 17:18:29
A very handwavy description
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
321,445,119,171,756,000
Shuri2060
01/30/2022 17:18:34
is just like you have a closed set
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
321,445,119,171,756,000
Shuri2060
01/30/2022 17:18:39
and subtract the borders
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
321,445,119,171,756,000
Shuri2060
01/30/2022 17:19:23
$$\{(x, y) : x^2+y^2 \leq 1\}$$
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
510,789,298,321,096,700
TeXit
01/30/2022 17:19:29
**Shuri2060**
https://cdn.discordapp.c…119171756033.png
321445119171756033.png
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
321,445,119,171,756,000
Shuri2060
01/30/2022 17:19:35
This is closed in R^2
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
321,445,119,171,756,000
Shuri2060
01/30/2022 17:19:46
everything within radius 1 inclusive of the origin
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
321,445,119,171,756,000
Shuri2060
01/30/2022 17:19:49
$$\{(x, y) : x^2+y^2 < 1\}$$
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
510,789,298,321,096,700
TeXit
01/30/2022 17:19:55
**Shuri2060**
https://cdn.discordapp.c…119171756033.png
321445119171756033.png
0
1
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
321,445,119,171,756,000
Shuri2060
01/30/2022 17:19:56
This is open in R^2
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
321,445,119,171,756,000
Shuri2060
01/30/2022 17:20:02
You don't include things exactly 1 away
0
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
158,020,687,850,766,340
moritz
01/30/2022 17:20:27
I just understood
1
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
158,020,687,850,766,340
moritz
01/30/2022 17:20:36
it's just like an open interval in more dimensions
1
0
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
321,445,119,171,756,000
Shuri2060
01/30/2022 17:20:55
yes yes
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
321,445,119,171,756,000
Shuri2060
01/30/2022 17:21:00
except more generalised
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67425a14c6434f0c9cd73d3c3b8d5b1a
158,020,687,850,766,340
moritz
01/30/2022 17:21:07
sorry, the script of my math lecture was confusing
1
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
321,445,119,171,756,000
Shuri2060
01/30/2022 17:21:09
open sets in R aren't JUST open intervals
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
158,020,687,850,766,340
moritz
01/30/2022 17:22:10
in 2 dimensions it would be any shape excluding the borders right?
1
0
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
321,445,119,171,756,000
Shuri2060
01/30/2022 17:22:23
as a very vague description, yes.
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
321,445,119,171,756,000
Shuri2060
01/30/2022 17:22:36
You realise the entire set is open
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
321,445,119,171,756,000
Shuri2060
01/30/2022 17:22:49
(0, infinity) is also open
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
158,020,687,850,766,340
moritz
01/30/2022 17:23:01
sure
1
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
321,445,119,171,756,000
Shuri2060
01/30/2022 17:23:18
The idea of boundaries is v. useful
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
321,445,119,171,756,000
Shuri2060
01/30/2022 17:23:32
Is this metric or topological spaces you're doing?
0
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
321,445,119,171,756,000
Shuri2060
01/30/2022 17:23:38
metric i assume
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help-10
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158,020,687,850,766,340
moritz
01/30/2022 17:23:48
sry my math lecture is in german
1
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
158,020,687,850,766,340
moritz
01/30/2022 17:23:51
brb googling
1
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
321,445,119,171,756,000
Shuri2060
01/30/2022 17:23:55
Well all metric spaces are topological spaces
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
158,020,687,850,766,340
moritz
01/30/2022 17:24:35
ah I see
1
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67425a14c6434f0c9cd73d3c3b8d5b1a
158,020,687,850,766,340
moritz
01/30/2022 17:24:55
so if I have a way to define distance (continuously)
1
0
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
158,020,687,850,766,340
moritz
01/30/2022 17:24:56
it's metric
1
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
158,020,687,850,766,340
moritz
01/30/2022 17:25:11
but if I just have some criterion to say whether or not something is close
1
0
null
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
321,445,119,171,756,000
Shuri2060
01/30/2022 17:25:13
What is the subject you are studying?
0
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67425a14c6434f0c9cd73d3c3b8d5b1a
158,020,687,850,766,340
moritz
01/30/2022 17:25:18
then it's topological
1
0
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
158,020,687,850,766,340
moritz
01/30/2022 17:25:21
compsci
1
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67425a14c6434f0c9cd73d3c3b8d5b1a
321,445,119,171,756,000
Shuri2060
01/30/2022 17:25:24
ay???
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67425a14c6434f0c9cd73d3c3b8d5b1a
321,445,119,171,756,000
Shuri2060
01/30/2022 17:25:30
🤔
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1
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
321,445,119,171,756,000
Shuri2060
01/30/2022 17:25:35
What topic is this??
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1
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
158,020,687,850,766,340
moritz
01/30/2022 17:25:43
Analysis 1
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0
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
321,445,119,171,756,000
Shuri2060
01/30/2022 17:25:46
🤔
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1
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
158,020,687,850,766,340
moritz
01/30/2022 17:25:47
or just math
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
158,020,687,850,766,340
moritz
01/30/2022 17:25:49
i guess
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0
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
321,445,119,171,756,000
Shuri2060
01/30/2022 17:25:53
hmmm ok ok
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
321,445,119,171,756,000
Shuri2060
01/30/2022 17:26:04
then 'open' is quite important
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
321,445,119,171,756,000
Shuri2060
01/30/2022 17:26:06
but not the focus
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
321,445,119,171,756,000
Shuri2060
01/30/2022 17:26:33
'does not include boundaries = open'
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
321,445,119,171,756,000
Shuri2060
01/30/2022 17:26:38
Is good enough
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
158,020,687,850,766,340
moritz
01/30/2022 17:28:27
yeah, I understood that it's just the difference between including an infinitesimal border area vs a explicitly defined boundary
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
158,020,687,850,766,340
moritz
01/30/2022 17:28:49
still feel very out of my depth though ^^
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0
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
158,020,687,850,766,340
moritz
01/30/2022 17:30:26
thanks for the help :)
1
0
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
158,020,687,850,766,340
moritz
01/30/2022 17:30:28
!close
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0
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help-10
67425a14c6434f0c9cd73d3c3b8d5b1a
158,020,687,850,766,340
moritz
01/30/2022 17:30:57
.close
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0
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help-10
18c032c844524078bfb5d66bfe38f362
662,427,066,905,395,200
vixen
01/30/2022 17:35:00
Is there any resources for geometry?
1
0
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help-10
18c032c844524078bfb5d66bfe38f362
662,427,066,905,395,200
vixen
01/30/2022 17:50:50
@Helpers
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help-10
18c032c844524078bfb5d66bfe38f362
261,933,205,387,477,000
riemann
01/30/2022 17:51:15
Can you be more specific
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help-10
18c032c844524078bfb5d66bfe38f362
662,427,066,905,395,200
vixen
01/30/2022 17:51:59
Like videos to watch, or papers, am starting geometry this year, want a head start
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help-10
18c032c844524078bfb5d66bfe38f362
935,988,910,025,232,400
Taltost
01/30/2022 17:59:21
here is an entire playlist: https://www.youtube.com/watch?v=il0EJrY64qE&list=PL26812DF9846578C3&index=2
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help-10
18c032c844524078bfb5d66bfe38f362
662,427,066,905,395,200
vixen
01/30/2022 18:02:57
Thankyou:sotrue:
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