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961
help-10
37ecb410bb6d4a298633ed58f4d80e17
193,692,307,453,771,780
Syst3ms
02/28/2022 06:36:34
you got something wrong
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help-10
37ecb410bb6d4a298633ed58f4d80e17
193,692,307,453,771,780
Syst3ms
02/28/2022 06:37:11
n⁵+3 ≤ n⁵ is most certainly not correct
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1
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961
help-10
37ecb410bb6d4a298633ed58f4d80e17
193,692,307,453,771,780
Syst3ms
02/28/2022 06:38:00
As for the methodology, recall that Θ is not about *always* being bounded by constant multiples of n², just that being true *for large enough n*
0
1
null
null
null
null
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961
help-10
37ecb410bb6d4a298633ed58f4d80e17
804,151,776,412,041,200
penguin
02/28/2022 06:38:52
I took the whole fraction as a whole, maybe that was my mistake
1
0
null
null
null
null
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961
help-10
37ecb410bb6d4a298633ed58f4d80e17
804,151,776,412,041,200
penguin
02/28/2022 06:39:03
what if I add any constant to make it larger?
1
0
null
null
null
null
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961
help-10
37ecb410bb6d4a298633ed58f4d80e17
193,692,307,453,771,780
Syst3ms
02/28/2022 06:39:15
Have you studied limits yet?
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null
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961
help-10
37ecb410bb6d4a298633ed58f4d80e17
804,151,776,412,041,200
penguin
02/28/2022 06:39:19
n^5 + 3 <= 4n^5 for ex
1
0
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null
null
null
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961
help-10
37ecb410bb6d4a298633ed58f4d80e17
193,692,307,453,771,780
Syst3ms
02/28/2022 06:39:31
that does work
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null
null
null
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961
help-10
37ecb410bb6d4a298633ed58f4d80e17
804,151,776,412,041,200
penguin
02/28/2022 06:39:39
Yes but im prompted to use ad hoc calculations not limit theorem
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tcpip
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961
help-10
37ecb410bb6d4a298633ed58f4d80e17
804,151,776,412,041,200
penguin
02/28/2022 06:40:43
like manually test each Big-O and Big-Omega instead of lim f(x)/g(x)
1
0
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null
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961
help-10
37ecb410bb6d4a298633ed58f4d80e17
193,692,307,453,771,780
Syst3ms
02/28/2022 06:41:10
I see
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961
help-10
37ecb410bb6d4a298633ed58f4d80e17
193,692,307,453,771,780
Syst3ms
02/28/2022 06:41:20
Anyway, n^5+3 ≤ 4n^5 works
0
1
null
null
null
null
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961
help-10
37ecb410bb6d4a298633ed58f4d80e17
804,151,776,412,041,200
penguin
02/28/2022 06:42:02
and i can make n^3 + 9 <= 4n^3 so I get n^2
1
0
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null
null
null
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961
help-10
37ecb410bb6d4a298633ed58f4d80e17
193,692,307,453,771,780
Syst3ms
02/28/2022 06:42:17
Although, for the second inequality i don't get what you did
0
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961
help-10
37ecb410bb6d4a298633ed58f4d80e17
804,151,776,412,041,200
penguin
02/28/2022 06:42:25
4n^5/4n^3 = n^2
1
0
null
null
null
null
null
961
help-10
37ecb410bb6d4a298633ed58f4d80e17
804,151,776,412,041,200
penguin
02/28/2022 06:42:42
which one
1
0
null
null
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null
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961
help-10
37ecb410bb6d4a298633ed58f4d80e17
193,692,307,453,771,780
Syst3ms
02/28/2022 06:42:49
You (up to a few inaccuracies) proved f(n) ≤ n² and n²/2 ≤ n²
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193,692,307,453,771,780
Syst3ms
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961
help-10
37ecb410bb6d4a298633ed58f4d80e17
193,692,307,453,771,780
Syst3ms
02/28/2022 06:43:09
But that does absolutely not imply f(n) ≥ n²/2
0
1
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null
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961
help-10
37ecb410bb6d4a298633ed58f4d80e17
804,151,776,412,041,200
penguin
02/28/2022 06:44:00
I must use a different approach to find Big-Omega then
1
0
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null
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null
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961
help-10
37ecb410bb6d4a298633ed58f4d80e17
804,151,776,412,041,200
penguin
02/28/2022 06:45:42
My idea was, since I previously proved n^2 from 4n^5/4n^3 is >= n^5+3/n^3+9 I can just replace it
1
0
null
null
null
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961
help-10
37ecb410bb6d4a298633ed58f4d80e17
804,151,776,412,041,200
penguin
02/28/2022 06:45:51
so n^2 >= Cn^2
1
0
null
null
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null
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961
help-10
37ecb410bb6d4a298633ed58f4d80e17
804,151,776,412,041,200
penguin
02/28/2022 06:46:20
Both proofs must have the same constant C and starting n?
1
0
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null
null
null
null
961
help-10
37ecb410bb6d4a298633ed58f4d80e17
193,692,307,453,771,780
Syst3ms
02/28/2022 06:46:29
Again, a>b and a>c does not mean b>c
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961
help-10
37ecb410bb6d4a298633ed58f4d80e17
193,692,307,453,771,780
Syst3ms
02/28/2022 06:46:35
nor b<c for that matter
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null
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961
help-10
37ecb410bb6d4a298633ed58f4d80e17
193,692,307,453,771,780
Syst3ms
02/28/2022 06:46:50
Honestly you can just do the same thing you did for the first direction
0
1
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null
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961
help-10
37ecb410bb6d4a298633ed58f4d80e17
193,692,307,453,771,780
Syst3ms
02/28/2022 06:47:00
i trust you to find a reasonable lower bound for n^5+3
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961
help-10
37ecb410bb6d4a298633ed58f4d80e17
193,692,307,453,771,780
Syst3ms
02/28/2022 06:47:22
As for 1/(n^3+9), that means finding an upper bound for n^3+9, which you can do similarly
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961
help-10
37ecb410bb6d4a298633ed58f4d80e17
804,151,776,412,041,200
penguin
02/28/2022 06:49:12
May I ask why n^5+3 needs a lower bound and n^3+9 needs an upper bound?
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0
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961
help-10
37ecb410bb6d4a298633ed58f4d80e17
804,151,776,412,041,200
penguin
02/28/2022 06:49:39
Why not find lower bound of both for ex
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961
help-10
37ecb410bb6d4a298633ed58f4d80e17
804,151,776,412,041,200
penguin
02/28/2022 06:51:10
and this^
1
0
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961
help-10
37ecb410bb6d4a298633ed58f4d80e17
804,151,776,412,041,200
penguin
02/28/2022 06:57:33
For big omega: h(n) = a/b = 4n^2 since h(x) >= n^5 +3/n^3 +9 I can just use h(n) instead n^5 +3 <= 8n^5 (a) n^3 +9 <= 2n^3 (b) so at the end im gonna get 4n^2 >= 2n^2 >= n^2 with C = 2, n > 1 f(n) belongs to big theta(n^2)
1
0
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null
null
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961
help-10
37ecb410bb6d4a298633ed58f4d80e17
193,692,307,453,771,780
Syst3ms
02/28/2022 07:22:08
Because 1/a > 1/b if and only if a < b
0
1
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null
null
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961
help-10
37ecb410bb6d4a298633ed58f4d80e17
193,692,307,453,771,780
Syst3ms
02/28/2022 07:22:22
1/2 > 1/3 because 2 < 3
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null
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null
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962
help-10
b64c36966a0a4e188a406a45df779118
411,122,254,286,422,000
Yuki_
02/28/2022 09:24:29
anyone help with set in discrete math
1
0
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962
help-10
b64c36966a0a4e188a406a45df779118
826,318,983,413,366,800
Cogwheels of the mind
02/28/2022 09:34:36
Pleased don’t ask to ask…
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962
help-10
b64c36966a0a4e188a406a45df779118
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Deleted User
02/28/2022 09:42:15
that's not even a definite question. If you want to discuss this go to #math-discussion
0
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962
help-10
b64c36966a0a4e188a406a45df779118
411,122,254,286,422,000
Yuki_
02/28/2022 09:43:09
@Deleted User if its not a question what is it ?
1
0
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null
null
962
help-10
b64c36966a0a4e188a406a45df779118
826,318,983,413,366,800
Cogwheels of the mind
02/28/2022 09:45:41
#❓how-to-get-help
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1
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null
null
null
null
962
help-10
b64c36966a0a4e188a406a45df779118
826,318,983,413,366,800
Cogwheels of the mind
02/28/2022 09:46:07
It says , don’t ask permission to ask, just ask.
0
1
null
null
null
null
null
962
help-10
b64c36966a0a4e188a406a45df779118
826,318,983,413,366,800
Cogwheels of the mind
02/28/2022 09:47:14
If you still don’t want to give you question, better close this channel for others.
0
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null
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962
help-10
b64c36966a0a4e188a406a45df779118
411,122,254,286,422,000
Yuki_
02/28/2022 10:13:54
let me do a favor . i betta quit the server.
1
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962
help-10
b64c36966a0a4e188a406a45df779118
826,318,983,413,366,800
Cogwheels of the mind
02/28/2022 10:15:31
Yeah you better
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963
help-10
1dbb2f5d00b4487da15bbe8e8c5ac2bb
215,090,636,192,350,200
نعمان
02/28/2022 11:15:27
"The integration here is over y, along the wire, with x treated as a constant. We must now write theta as a function of y, or y as a function of theta" why is that?
https://cdn.discordapp.c…20228_170308.png
20220228_170308.png
1
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963
help-10
1dbb2f5d00b4487da15bbe8e8c5ac2bb
215,090,636,192,350,200
نعمان
02/28/2022 11:16:05
(I posted this here since its more a question about integration then electric fields, tell me if it doesnt belong here and i'll repost it to the physics help channel)
1
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963
help-10
1dbb2f5d00b4487da15bbe8e8c5ac2bb
844,913,236,989,837,300
5lttrz
02/28/2022 11:21:12
Well, the distance from the wire, x is constant
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804,151,776,412,041,200
penguin
2507
penguin
false
963
help-10
1dbb2f5d00b4487da15bbe8e8c5ac2bb
844,913,236,989,837,300
5lttrz
02/28/2022 11:21:33
The variable here is y
0
1
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null
null
null
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963
help-10
1dbb2f5d00b4487da15bbe8e8c5ac2bb
844,913,236,989,837,300
5lttrz
02/28/2022 11:21:52
To integrate, you need to make a substitution, writing y in terms of θ
0
1
null
null
null
null
null
963
help-10
1dbb2f5d00b4487da15bbe8e8c5ac2bb
844,913,236,989,837,300
5lttrz
02/28/2022 11:23:04
You see, instead of dealing with square roots and stuff, you can directly write the hypotenuse as y cscθ
0
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null
null
null
null
null
963
help-10
1dbb2f5d00b4487da15bbe8e8c5ac2bb
844,913,236,989,837,300
5lttrz
02/28/2022 11:23:49
Well yea you need to convert it into a function in θ
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411,122,254,286,422,000
Yuki_
7688
Yuki_
false
963
help-10
1dbb2f5d00b4487da15bbe8e8c5ac2bb
215,090,636,192,350,200
نعمان
02/28/2022 11:24:35
I dont get why you would have to write y in terms of theta honestly
1
0
456,226,577,798,135,800
Deleted User
0000
Deleted User
false
963
help-10
1dbb2f5d00b4487da15bbe8e8c5ac2bb
844,913,236,989,837,300
5lttrz
02/28/2022 11:28:48
Wait @نعمان
0
1
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null
null
null
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963
help-10
1dbb2f5d00b4487da15bbe8e8c5ac2bb
844,913,236,989,837,300
5lttrz
02/28/2022 11:28:56
The components
0
1
null
null
null
null
null
963
help-10
1dbb2f5d00b4487da15bbe8e8c5ac2bb
844,913,236,989,837,300
5lttrz
02/28/2022 11:29:05
The electric field is a vector
0
1
null
null
null
null
null
963
help-10
1dbb2f5d00b4487da15bbe8e8c5ac2bb
844,913,236,989,837,300
5lttrz
02/28/2022 11:29:16
Thats why we need to convert it into terms of θ
0
1
null
null
null
null
null
963
help-10
1dbb2f5d00b4487da15bbe8e8c5ac2bb
844,913,236,989,837,300
5lttrz
02/28/2022 11:29:28
We cannot integrate directly, as its not a scalar
0
1
null
null
null
null
null
963
help-10
1dbb2f5d00b4487da15bbe8e8c5ac2bb
215,090,636,192,350,200
نعمان
02/28/2022 11:30:07
Hmm okey, ig i'll start working on my calculus bcs idk how to integrate a vector
1
0
null
null
null
null
null
964
help-10
90e09312d6c747a8bdabec2809aed566
900,070,996,852,240,400
krakenlord
02/28/2022 12:02:30
hello
1
0
null
null
null
null
null
964
help-10
90e09312d6c747a8bdabec2809aed566
900,070,996,852,240,400
krakenlord
02/28/2022 12:02:36
the question is
1
0
215,090,636,192,350,200
نعمان
0934
نعمان
false
964
help-10
90e09312d6c747a8bdabec2809aed566
900,070,996,852,240,400
krakenlord
02/28/2022 12:02:46
the sum of three consecutive multiples of 9 is 162
1
0
null
null
null
null
null
964
help-10
90e09312d6c747a8bdabec2809aed566
900,070,996,852,240,400
krakenlord
02/28/2022 12:02:49
find the multiples
1
0
null
null
null
null
null
964
help-10
90e09312d6c747a8bdabec2809aed566
900,070,996,852,240,400
krakenlord
02/28/2022 12:02:52
how will u do dis
1
0
null
null
null
null
null
964
help-10
90e09312d6c747a8bdabec2809aed566
693,116,087,390,175,400
_06Cupcake
02/28/2022 12:05:49
u know the concept of AP?
0
1
null
null
null
null
null
964
help-10
90e09312d6c747a8bdabec2809aed566
706,934,233,012,371,600
Ansh_
02/28/2022 12:05:50
Hey Tornado
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844,913,236,989,837,300
5lttrz
9727
5lttrz
false
964
help-10
90e09312d6c747a8bdabec2809aed566
693,116,087,390,175,400
_06Cupcake
02/28/2022 12:05:57
Arithmetic progression
0
1
215,090,636,192,350,200
نعمان
0934
نعمان
false
964
help-10
90e09312d6c747a8bdabec2809aed566
693,116,087,390,175,400
_06Cupcake
02/28/2022 12:06:03
@krakenlord
0
1
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null
null
null
null
964
help-10
90e09312d6c747a8bdabec2809aed566
706,934,233,012,371,600
Ansh_
02/28/2022 12:06:10
how do you write a multiple of 9?
0
1
null
null
null
null
null
964
help-10
90e09312d6c747a8bdabec2809aed566
900,070,996,852,240,400
krakenlord
02/28/2022 12:06:50
i thought of doing
1
0
null
null
null
null
null
964
help-10
90e09312d6c747a8bdabec2809aed566
900,070,996,852,240,400
krakenlord
02/28/2022 12:07:06
x + (x+9) + (x+18)
1
0
null
null
null
null
null
964
help-10
90e09312d6c747a8bdabec2809aed566
900,070,996,852,240,400
krakenlord
02/28/2022 12:07:12
as 9 and 18 and multiple of 9
1
0
null
null
null
null
null
964
help-10
90e09312d6c747a8bdabec2809aed566
706,934,233,012,371,600
Ansh_
02/28/2022 12:08:26
wow, that would help though
0
1
null
null
null
null
null
964
help-10
90e09312d6c747a8bdabec2809aed566
706,934,233,012,371,600
Ansh_
02/28/2022 12:08:35
3x + 27 = 162
0
1
null
null
null
null
null
964
help-10
90e09312d6c747a8bdabec2809aed566
706,934,233,012,371,600
Ansh_
02/28/2022 12:08:41
,calc (162 - 27)/3
0
1
null
null
null
null
null
964
help-10
90e09312d6c747a8bdabec2809aed566
510,789,298,321,096,700
TeXit
02/28/2022 12:08:42
Result: ``` 45 ```
0
1
null
null
null
null
null
964
help-10
90e09312d6c747a8bdabec2809aed566
706,934,233,012,371,600
Ansh_
02/28/2022 12:08:49
You'll get x = 45
0
1
null
null
null
null
null
964
help-10
90e09312d6c747a8bdabec2809aed566
706,934,233,012,371,600
Ansh_
02/28/2022 12:09:11
And consequently, the values of x, x + 9, x + 18
0
1
null
null
null
null
null
964
help-10
90e09312d6c747a8bdabec2809aed566
900,070,996,852,240,400
krakenlord
02/28/2022 12:09:40
so if x is 45
1
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900,070,996,852,240,400
krakenlord
1754
krakenlord
false
964
help-10
90e09312d6c747a8bdabec2809aed566
900,070,996,852,240,400
krakenlord
02/28/2022 12:09:53
i do 45+ 9 and 45 + 18 for values right?
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help-10
90e09312d6c747a8bdabec2809aed566
900,070,996,852,240,400
krakenlord
02/28/2022 12:12:07
close
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krakenlord
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help-10
90e09312d6c747a8bdabec2809aed566
900,070,996,852,240,400
krakenlord
02/28/2022 12:12:11
.close
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help-10
4c361494b06b4c48825b660da4fee710
634,217,988,064,673,800
brandon barber
02/28/2022 14:44:08
Hi
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Ansh_
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Arya
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help-10
4c361494b06b4c48825b660da4fee710
634,217,988,064,673,800
brandon barber
02/28/2022 14:44:14
https://cdn.discordapp.c…14233_Chrome.jpg
Screenshot_20220228-114233_Chrome.jpg
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help-10
4c361494b06b4c48825b660da4fee710
634,217,988,064,673,800
brandon barber
02/28/2022 14:44:36
D correct?
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help-10
4c361494b06b4c48825b660da4fee710
310,413,396,434,485,250
mei ♡
02/28/2022 14:56:09
yes
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help-10
4c361494b06b4c48825b660da4fee710
634,217,988,064,673,800
brandon barber
02/28/2022 14:56:51
https://cdn.discordapp.c…13906_Chrome.jpg
Screenshot_20220228-113906_Chrome.jpg
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help-10
4c361494b06b4c48825b660da4fee710
800,622,149,903,056,900
Shen
02/28/2022 15:02:37
^^
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help-10
4c361494b06b4c48825b660da4fee710
606,859,042,849,030,100
Valoche
02/28/2022 15:14:02
You devide the speed by 2 couse you have half an hour
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help-10
4c361494b06b4c48825b660da4fee710
606,859,042,849,030,100
Valoche
02/28/2022 15:14:49
Then you do a cross product with the conversion ft -> miles
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help-10
4c361494b06b4c48825b660da4fee710
606,859,042,849,030,100
Valoche
02/28/2022 15:15:20
Do you understand why?
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help-10
4c361494b06b4c48825b660da4fee710
606,859,042,849,030,100
Valoche
02/28/2022 15:19:29
@brandon barber
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help-10
0236be58eb55427e9bfb3b067ba31dbc
777,469,972,343,423,000
Nix
02/28/2022 16:59:55
can someone explain this
https://cdn.discordapp.c…0586/unknown.png
unknown.png
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help-10
0236be58eb55427e9bfb3b067ba31dbc
777,469,972,343,423,000
Nix
02/28/2022 17:00:01
i didnt get the last part
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help-10
0236be58eb55427e9bfb3b067ba31dbc
200,013,547,491,688,450
a disappointing son
02/28/2022 17:00:14
splitting the fraction?
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help-10
0236be58eb55427e9bfb3b067ba31dbc
777,469,972,343,423,000
Nix
02/28/2022 17:00:22
yea
1
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help-10
0236be58eb55427e9bfb3b067ba31dbc
777,469,972,343,423,000
Nix
02/28/2022 17:00:50
i get the first and second operations
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help-10
0236be58eb55427e9bfb3b067ba31dbc
777,469,972,343,423,000
Nix
02/28/2022 17:01:01
but the last got me confused
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help-10
0236be58eb55427e9bfb3b067ba31dbc
777,469,972,343,423,000
Nix
02/28/2022 17:01:09
1+1/x-1
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brandon barber
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help-10
0236be58eb55427e9bfb3b067ba31dbc
200,013,547,491,688,450
a disappointing son
02/28/2022 17:01:40
you're confused on why $\frac{x-1}{x-1}+\frac{1}{x-1}=1+\frac{1}{x-1}$?
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help-10
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TeXit
02/28/2022 17:01:43
**a disappointing son**
https://cdn.discordapp.c…547491688448.png
200013547491688448.png
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Mathematics Bot
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Bot
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help-10
0236be58eb55427e9bfb3b067ba31dbc
777,469,972,343,423,000
Nix
02/28/2022 17:02:45
yes
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help-10
0236be58eb55427e9bfb3b067ba31dbc
200,013,547,491,688,450
a disappointing son
02/28/2022 17:03:07
well... $\frac{x}{x}=1$...
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