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Akintos
02/20/2022 08:21:18
eh i guess i will just handpick them
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Akintos
02/20/2022 08:21:23
let me ask something else doe
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Akintos
02/20/2022 08:21:37
https://cdn.discordapp.c…0464/unknown.png
unknown.png
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Akintos
02/20/2022 08:21:54
https://cdn.discordapp.c…5/fleridm_20.jpg
fleridm_20.jpg
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Akintos
02/20/2022 08:21:54
https://cdn.discordapp.c…2/fleridm_21.jpg
fleridm_21.jpg
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Akintos
02/20/2022 08:22:04
does my solution look correct
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cb65cd960cf741f4b7303617f2d4ecb6
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pickle
02/20/2022 09:40:33
It looks close
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Akintos
02/20/2022 09:40:44
close?
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cb65cd960cf741f4b7303617f2d4ecb6
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pickle
02/20/2022 09:40:59
Almost correct
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Akintos
02/20/2022 09:44:38
yeah, but what is wrong
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help-10
cb65cd960cf741f4b7303617f2d4ecb6
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Mat
02/20/2022 10:24:14
Shouldn't it be $$(J_{(u,v)}(x_0, y_0))^{-1} = J_{(u^{-1}, v^{-1})}(u(x_0, y_0), v(x_0, y_0)) $$ $$ = J_{(x,y)}(u(x_0, y_0), v(x_0, y_0))$$ ?
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cb65cd960cf741f4b7303617f2d4ecb6
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TeXit
02/20/2022 10:25:12
**Mat**
https://cdn.discordapp.c…466631987211.png
551807466631987211.png
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cb65cd960cf741f4b7303617f2d4ecb6
510,789,298,321,096,700
TeXit
02/20/2022 10:27:30
**Mat**
https://cdn.discordapp.c…466631987211.png
551807466631987211.png
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cb65cd960cf741f4b7303617f2d4ecb6
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TeXit
02/20/2022 10:28:16
**Mat**
https://cdn.discordapp.c…466631987211.png
551807466631987211.png
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cb65cd960cf741f4b7303617f2d4ecb6
551,807,466,631,987,200
Mat
02/20/2022 10:28:45
@Akintos
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Akintos
02/20/2022 10:43:53
hm
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Akintos
02/20/2022 10:44:13
i dont get it
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Mat
02/20/2022 10:47:15
The inverse of the Jacobian of f at a point (x_0, y_0) is the Jacobian of the inverse function of f at the image of (x_0, y_0) under f, namely f(x_0, y_0), not at (x_0, y_0) itself
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Mat
02/20/2022 10:48:47
That is what I meant here
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Akintos
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Akintos
02/20/2022 11:23:33
hm
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Akintos
02/20/2022 11:24:38
https://math.stackexchange.com/questions/3651864/if-x-u3v3-and-y-uv-v2-are-solved-for-u-and-v-in-terms-of-x-and-y
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Akintos
02/20/2022 11:24:46
but on this question they just flipped it
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Akintos
02/20/2022 11:25:04
https://math.stackexchange.com/questions/3651864/if-x-u3v3-and-y-uv-v2-are-solved-for-u-and-v-in-terms-of-x-and-y
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Akintos
02/20/2022 11:27:10
so i have to solve the equations for x and y?
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cb65cd960cf741f4b7303617f2d4ecb6
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Mat
02/20/2022 11:38:12
Mm, or maybe your solution could be correct, the text is just sort of vague. If with "compute .. near (x_0, y_0)" they mean "at the point where (x, y) are (x_0, y_0)", as in your liked problem, then you are correct. If they instead mean where (u, v) are (x_0, y_0) then you'd have to take the path I was mentioning
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cb65cd960cf741f4b7303617f2d4ecb6
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Mat
02/20/2022 11:39:59
But probably it's the first case, which would make sense the most, so you're actually good as you did I'd say!
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Akintos
02/20/2022 11:40:22
uff ait thx for the explanation doe
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Akintos
02/20/2022 12:44:42
https://cdn.discordapp.c…3008/unknown.png
unknown.png
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cb65cd960cf741f4b7303617f2d4ecb6
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Akintos
02/20/2022 12:44:56
can someone explain to me where the lowest equations came from?
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rofl
02/20/2022 12:56:10
@Akintos they differentiated the top two equations I tlooks like
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Akintos
02/20/2022 12:56:34
damn my book doesnt have a chapter on implicit differentiatin
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TeXit
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rofl
02/20/2022 12:57:00
for example, d(xu)/dx = dx/dx\*u + x\*du/dx
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help-10
cb65cd960cf741f4b7303617f2d4ecb6
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rofl
02/20/2022 12:57:13
which is how the 'xu' part in the first equation
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cb65cd960cf741f4b7303617f2d4ecb6
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rofl
02/20/2022 12:57:28
is related to the x(du/dx) + u in the second
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Akintos
02/20/2022 12:58:06
hm ait imma try figure it out
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Mat
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786
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cb65cd960cf741f4b7303617f2d4ecb6
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rofl
02/20/2022 12:59:06
basically it's normal differentiateion
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TeXit
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786
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cb65cd960cf741f4b7303617f2d4ecb6
559,067,152,754,147,300
rofl
02/20/2022 12:59:42
but if f(x) = x then f'(x) = dx/dx
0
1
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786
help-10
cb65cd960cf741f4b7303617f2d4ecb6
559,067,152,754,147,300
rofl
02/20/2022 12:59:47
and dx/dx = 1
0
1
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786
help-10
cb65cd960cf741f4b7303617f2d4ecb6
559,067,152,754,147,300
rofl
02/20/2022 13:00:04
but then if f(x, u) = u, then f'(x) = du/dx
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cb65cd960cf741f4b7303617f2d4ecb6
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Akintos
02/20/2022 13:01:11
so implisit derivation with regard to x of u^2 would be (du/dx)2u ?
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cb65cd960cf741f4b7303617f2d4ecb6
559,067,152,754,147,300
rofl
02/20/2022 13:01:57
yes
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cb65cd960cf741f4b7303617f2d4ecb6
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Akintos
02/20/2022 13:06:11
wait so what would xy^2+zu+v^2 with regard to u
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Akintos
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Akintos
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786
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cb65cd960cf741f4b7303617f2d4ecb6
312,581,003,095,048,200
Akintos
02/20/2022 13:06:52
2y * dy/du + dz/du + 2v * dv/du?
1
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cb65cd960cf741f4b7303617f2d4ecb6
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Akintos
02/20/2022 13:11:54
wait no
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cb65cd960cf741f4b7303617f2d4ecb6
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Akintos
02/20/2022 13:12:01
just xy^2
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cb65cd960cf741f4b7303617f2d4ecb6
312,581,003,095,048,200
Akintos
02/20/2022 13:12:04
would it be
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help-10
cb65cd960cf741f4b7303617f2d4ecb6
312,581,003,095,048,200
Akintos
02/20/2022 13:12:15
y^2 dx/du + 2y dy/du x
1
0
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help-10
cb65cd960cf741f4b7303617f2d4ecb6
551,807,466,631,987,200
Mat
02/20/2022 13:12:29
Also note that the "implicit differentiation" idea should be part of the statement of the implicit function theorem
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help-10
cb65cd960cf741f4b7303617f2d4ecb6
551,807,466,631,987,200
Mat
02/20/2022 13:12:44
If you have seen a theorem by that name
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cb65cd960cf741f4b7303617f2d4ecb6
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Akintos
02/20/2022 13:13:24
hm
1
0
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help-10
cb65cd960cf741f4b7303617f2d4ecb6
312,581,003,095,048,200
Akintos
02/20/2022 13:13:30
but was the last thing i wrote correct
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cb65cd960cf741f4b7303617f2d4ecb6
551,807,466,631,987,200
Mat
02/20/2022 13:14:49
mm no I don't think
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cb65cd960cf741f4b7303617f2d4ecb6
312,581,003,095,048,200
Akintos
02/20/2022 13:15:27
https://cdn.discordapp.c…6780/unknown.png
unknown.png
1
0
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cb65cd960cf741f4b7303617f2d4ecb6
312,581,003,095,048,200
Akintos
02/20/2022 13:15:34
but i found the same as symbolab did
1
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cb65cd960cf741f4b7303617f2d4ecb6
551,807,466,631,987,200
Mat
02/20/2022 13:16:47
Ah yes yes the second line you wrote here is correct
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cb65cd960cf741f4b7303617f2d4ecb6
551,807,466,631,987,200
Mat
02/20/2022 13:16:53
I was reading the first line
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Akintos
02/20/2022 13:17:02
nicee
1
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cb65cd960cf741f4b7303617f2d4ecb6
312,581,003,095,048,200
Akintos
02/20/2022 14:06:11
https://cdn.discordapp.c…8708/unknown.png
unknown.png
1
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cb65cd960cf741f4b7303617f2d4ecb6
312,581,003,095,048,200
Akintos
02/20/2022 14:06:38
wait how do they not get dy/dx anywhere
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cb65cd960cf741f4b7303617f2d4ecb6
312,581,003,095,048,200
Akintos
02/20/2022 14:11:54
am i supposed to look at it as a confstant
1
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cb65cd960cf741f4b7303617f2d4ecb6
261,933,205,387,477,000
riemann
02/20/2022 14:48:07
Yes. Unless you're calculating du/dy. Then you treat y as a variable and x a constant
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cb65cd960cf741f4b7303617f2d4ecb6
312,581,003,095,048,200
Akintos
02/20/2022 15:00:16
nice ait
1
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7e77b8b5b2b9400a8c1b717286fa58be
859,971,294,409,785,300
semaj
02/20/2022 17:05:18
Could someone check these?
https://cdn.discordapp.c…enderedImage.jpg
RenderedImage.jpg
1
0
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help-10
7e77b8b5b2b9400a8c1b717286fa58be
859,971,294,409,785,300
semaj
02/20/2022 17:05:18
Could someone check these?
https://cdn.discordapp.c…enderedImage.jpg
RenderedImage.jpg
1
0
null
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null
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help-10
7e77b8b5b2b9400a8c1b717286fa58be
268,789,506,663,120,900
verιғιed 𝓒𝓸м𝓫Ø
02/20/2022 17:19:56
so for the first part, horizontal compression inside is already a reciprocal
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7e77b8b5b2b9400a8c1b717286fa58be
268,789,506,663,120,900
verιғιed 𝓒𝓸м𝓫Ø
02/20/2022 17:20:07
so it would actually be 10x inside the bracket
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7e77b8b5b2b9400a8c1b717286fa58be
268,789,506,663,120,900
verιғιed 𝓒𝓸м𝓫Ø
02/20/2022 17:20:11
and that would compress it
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Akintos
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7e77b8b5b2b9400a8c1b717286fa58be
268,789,506,663,120,900
verιғιed 𝓒𝓸м𝓫Ø
02/20/2022 17:20:55
the rest of it seems right
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91c8b11cd0314e7aa59b5ce50df571b1
759,132,550,240,141,400
Cenni
02/20/2022 18:50:27
https://cdn.discordapp.c…332/IMG_4654.jpg
IMG_4654.jpg
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91c8b11cd0314e7aa59b5ce50df571b1
759,132,550,240,141,400
Cenni
02/20/2022 18:50:34
the question is as follows
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91c8b11cd0314e7aa59b5ce50df571b1
759,132,550,240,141,400
Cenni
02/20/2022 18:51:24
how many numbers of 3 DISTINCT digits can be formed with the numbers 1,2,3,4,5,6,7,8,9
1
0
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91c8b11cd0314e7aa59b5ce50df571b1
759,132,550,240,141,400
Cenni
02/20/2022 18:51:49
I answered 9x8x7 which is 504 and the book says it’s correct
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91c8b11cd0314e7aa59b5ce50df571b1
759,132,550,240,141,400
Cenni
02/20/2022 18:51:58
the following two questions are the ones I can’t solve
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312,581,003,095,048,200
Akintos
5593
Akintos
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788
help-10
91c8b11cd0314e7aa59b5ce50df571b1
759,132,550,240,141,400
Cenni
02/20/2022 18:52:14
“how many of these are even” “how many of these are odd”
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0
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91c8b11cd0314e7aa59b5ce50df571b1
759,132,550,240,141,400
Cenni
02/20/2022 18:53:08
Here I tried to add the possible cases, for example when we have 2 evens and 1 odd, 1 even and 2 odds, and 3 odds
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0
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788
help-10
91c8b11cd0314e7aa59b5ce50df571b1
759,132,550,240,141,400
Cenni
02/20/2022 18:53:26
the book says 280 odd 224 even
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0
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788
help-10
91c8b11cd0314e7aa59b5ce50df571b1
759,132,550,240,141,400
Cenni
02/20/2022 18:53:48
idk how to reach those answers
1
0
859,971,294,409,785,300
semaj
1358
semaj
false
788
help-10
91c8b11cd0314e7aa59b5ce50df571b1
759,132,550,240,141,400
Cenni
02/20/2022 18:57:09
nvm I figured it out
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0
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788
help-10
91c8b11cd0314e7aa59b5ce50df571b1
759,132,550,240,141,400
Cenni
02/20/2022 18:57:11
.close
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0
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789
help-10
7d6cd208520e4bf1bf33bd3dda62a0c9
870,355,702,575,685,800
rosie han
02/20/2022 19:32:05
https://cdn.discordapp.c…998/IMG_2950.jpg
IMG_2950.jpg
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789
help-10
7d6cd208520e4bf1bf33bd3dda62a0c9
870,355,702,575,685,800
rosie han
02/20/2022 19:48:11
@Helpers
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0
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790
help-10
38e8204f35b44a56805449e21be11043
229,440,634,191,085,570
Noki
02/20/2022 20:57:17
https://cdn.discordapp.c…126/IMG_6105.jpg
IMG_6105.jpg
1
0
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790
help-10
38e8204f35b44a56805449e21be11043
904,391,147,802,198,000
kermit.
02/20/2022 20:58:27
Google such questions for solutions bruh
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1
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null
790
help-10
38e8204f35b44a56805449e21be11043
684,674,576,998,858,800
kloser
02/20/2022 20:58:33
sin a+b = sin a cos b + cos a sin b
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1
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790
help-10
38e8204f35b44a56805449e21be11043
904,391,147,802,198,000
kermit.
02/20/2022 20:58:39
These are simple and I’ll get the answer fast
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1
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790
help-10
38e8204f35b44a56805449e21be11043
684,674,576,998,858,800
kloser
02/20/2022 20:58:39
bad advice
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1
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null
790
help-10
38e8204f35b44a56805449e21be11043
684,674,576,998,858,800
kloser
02/20/2022 20:58:51
dont do that please
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1
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790
help-10
38e8204f35b44a56805449e21be11043
229,440,634,191,085,570
Noki
02/20/2022 20:59:12
Thanks RYC
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790
help-10
38e8204f35b44a56805449e21be11043
904,391,147,802,198,000
kermit.
02/20/2022 20:59:37
There is no difference between what U wrote and the solution
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1
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790
help-10
38e8204f35b44a56805449e21be11043
229,440,634,191,085,570
Noki
02/20/2022 20:59:41
So will my answer be route 6 + route 2 over 4?
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790
help-10
38e8204f35b44a56805449e21be11043
684,674,576,998,858,800
kloser
02/20/2022 20:59:46
I'm not RYC. He's much better at math, and I'm just voting him for mod...
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1
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790
help-10
38e8204f35b44a56805449e21be11043
904,391,147,802,198,000
kermit.
02/20/2022 20:59:50
It’s just a one step solution
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1
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null
790
help-10
38e8204f35b44a56805449e21be11043
229,440,634,191,085,570
Noki
02/20/2022 21:00:21
You're saying this is a one step answer?
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790
help-10
38e8204f35b44a56805449e21be11043
229,440,634,191,085,570
Noki
02/20/2022 21:00:46
#8 you think is one step?
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790
help-10
38e8204f35b44a56805449e21be11043
229,440,634,191,085,570
Noki
02/20/2022 21:00:46
https://cdn.discordapp.c…78E0D87659C3.jpg
D87D7DCE-113D-4F05-8BAA-78E0D87659C3.jpg
1
0
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790
help-10
38e8204f35b44a56805449e21be11043
904,391,147,802,198,000
kermit.
02/20/2022 21:00:58
I meant after this there’s nothing to it
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1
229,440,634,191,085,570
Noki
6536
Noki
false
790
help-10
38e8204f35b44a56805449e21be11043
229,440,634,191,085,570
Noki
02/20/2022 21:01:18
Then why am I being told to simplify my answer including radicals
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790
help-10
38e8204f35b44a56805449e21be11043
904,391,147,802,198,000
kermit.
02/20/2022 21:01:39
Yes darling I expect u to solve the math right
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1
904,391,147,802,198,000
kermit.
6546
kermit.
false
790
help-10
38e8204f35b44a56805449e21be11043
904,391,147,802,198,000
kermit.
02/20/2022 21:01:57
The trig was the crux
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1
904,391,147,802,198,000
kermit.
6546
kermit.
false
790
help-10
38e8204f35b44a56805449e21be11043
904,391,147,802,198,000
kermit.
02/20/2022 21:02:18
Now I didn’t know u had problem in the math of it, solving the radicals
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