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Wumpie
01/21/2022 07:20:08
wait I'm not sure
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Deus_Vult
01/21/2022 07:20:26
the pargraph talks about the sides of a triangle not so much about the subtraction of components
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Deus_Vult
01/21/2022 07:20:33
so it's not exactly what you're looking for
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Wumpie
01/21/2022 07:20:35
yeah that's what I realised
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Deus_Vult
01/21/2022 07:21:04
you don't have to try and figure it out just plug in b-a instead of a-b
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Deus_Vult
01/21/2022 07:21:07
see what happens
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Deus_Vult
01/21/2022 07:21:12
and make conclusions
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Wumpie
01/21/2022 07:21:15
was gonna do that yes
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Deus_Vult
01/21/2022 07:21:24
even take a numerical example
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Wumpie
01/21/2022 07:24:39
https://cdn.discordapp.c…7474/unknown.png
unknown.png
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Wumpie
01/21/2022 07:24:45
https://cdn.discordapp.c…6850/unknown.png
unknown.png
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Wumpie
01/21/2022 07:24:47
It does not
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Wumpie
01/21/2022 07:25:22
Can you confirm that I didn't hit one case where it'd be same because math shenanigins
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Deus_Vult
01/21/2022 07:25:54
i'd recommend doing it on paper instead of a program
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Deus_Vult
01/21/2022 07:26:00
you'll see it
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Wumpie
01/21/2022 07:26:07
;-;
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Deus_Vult
01/21/2022 07:26:23
you'll thank me later
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Wumpie
01/21/2022 07:27:10
I'm just gonna say that it doesn't matter, because I don't think these random numbers will generate the one exception
https://cdn.discordapp.c…4002/unknown.png
unknown.png
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Wumpie
01/21/2022 07:27:10
I'm just gonna say that it doesn't matter, because I don't think these random numbers will generate the one exception
https://cdn.discordapp.c…2916/unknown.png
unknown.png
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Wumpie
01/21/2022 07:28:10
So what does this do lol
https://cdn.discordapp.c…7488/unknown.png
unknown.png
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Wumpie
01/21/2022 07:28:16
lambda πŸ€”
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Deus_Vult
01/21/2022 07:28:57
lambda appears to be some coefficient
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Deus_Vult
01/21/2022 07:29:38
it doesn't really do anything in this context
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Deus_Vult
01/21/2022 07:29:57
it just defines x as a linear combination of 2 vectors
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Deus_Vult
01/21/2022 07:30:28
let me ask you this
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Deus_Vult
01/21/2022 07:30:39
in the p.t. you take the differnce and square it
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Deus_Vult
01/21/2022 07:30:43
(a-b)^2
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Deus_Vult
01/21/2022 07:30:56
lets say a-b = z
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Deus_Vult
01/21/2022 07:31:02
therefore b-a= -z correct?
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Deus_Vult
01/21/2022 07:31:27
so in once scenario, you'd have (a-b)^2 = z^2 , (b-a)^2 =(-z)^2
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Wumpie
01/21/2022 07:35:23
Ah
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Wumpie
01/21/2022 07:35:35
I forgot about that part
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Wumpie
01/21/2022 07:38:58
thanks :)
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Wumpie
01/21/2022 07:58:33
What is this doing?
https://cdn.discordapp.c…7056/unknown.png
unknown.png
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Wumpie
01/21/2022 07:59:01
because vector * vector just returns a vector with each component mutliplied with the same component of the other vector
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KillerWhale2498
01/21/2022 08:00:58
Cross product gives you third function in applications
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Wumpie
01/21/2022 08:01:17
What?
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KillerWhale2498
01/21/2022 08:02:26
This how you get the third vector when you have two vectors times each other
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Wumpie
01/21/2022 08:02:56
Is * not the same as x in this context?
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Wumpie
01/21/2022 08:03:20
I don't get why it does this
https://cdn.discordapp.c…9915/unknown.png
unknown.png
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KillerWhale2498
01/21/2022 08:03:25
It is the same
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KillerWhale2498
01/21/2022 08:03:28
Lol
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Wumpie
01/21/2022 08:04:15
Shouldn't it be doing (a1 * b1) (a2 * b2) (a3 * b3)
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KillerWhale2498
01/21/2022 08:04:32
Some people do * while others do X. X is used for cross to show you are doing the cross product
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KillerWhale2498
01/21/2022 08:04:37
Is the same thing
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Wumpie
01/21/2022 08:04:45
Okay but?
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Wumpie
01/21/2022 08:04:57
Or does this do the same in a weird way
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KillerWhale2498
01/21/2022 08:05:07
Did you learn middle school algebra
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Wumpie
01/21/2022 08:05:11
yes
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KillerWhale2498
01/21/2022 08:05:20
Okay good
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Wumpie
01/21/2022 08:05:54
I'm just confused why it does - instead of just vector.x * vector2.x
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KillerWhale2498
01/21/2022 08:06:20
Ohh. I see
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Wumpie
01/21/2022 08:06:27
^
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Wumpie
01/21/2022 08:06:54
So why does it do that?
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Wumpie
01/21/2022 08:09:21
It should do this (2 components cuz lazy)
https://cdn.discordapp.c…4708/unknown.png
unknown.png
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Wumpie
01/21/2022 08:09:35
afaik
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KillerWhale2498
01/21/2022 08:10:29
Do you know I j and k?
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Wumpie
01/21/2022 08:10:37
What
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KillerWhale2498
01/21/2022 08:11:54
They are called vectors components. X = I, j= y and k=z. You will see this in physics. But is how it ends like this
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KillerWhale2498
01/21/2022 08:12:14
Here
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KillerWhale2498
01/21/2022 08:12:22
https://cdn.discordapp.c…848/IMG_8612.png
IMG_8612.png
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Wumpie
01/21/2022 08:12:49
I don't think we use that in the theory lel
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Arctic Soup
01/21/2022 08:13:54
https://cdn.discordapp.c…650/IMG_4550.jpg
IMG_4550.jpg
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Arctic Soup
01/21/2022 08:14:04
Can someone solve the bottom 2
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Wumpie
01/21/2022 08:14:13
Wrong channel
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KillerWhale2498
01/21/2022 08:14:18
Simplify bud
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KillerWhale2498
01/21/2022 08:14:47
Do exactly like problem 1. Where ypu distribute
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Arctic Soup
01/21/2022 08:15:30
What channel should I use then
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Wumpie
01/21/2022 08:15:41
your own #❓how-to-get-help
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Deus_Vult
01/21/2022 08:28:32
essentially it's not doing anythign per se , its a definition
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Deus_Vult
01/21/2022 08:28:42
it's how the cross product is defined
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Deus_Vult
01/21/2022 08:29:21
formally its' the determinant of a matrix containing the unit vectors and the components of the other vectors respectively
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Wumpie
01/21/2022 08:31:21
Unit vectors? So they're normalised
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Deus_Vult
01/21/2022 08:31:41
Not exactly
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Deus_Vult
01/21/2022 08:31:48
this is what it would look like
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Deus_Vult
01/21/2022 08:31:54
but.. did you study that in class?
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Deus_Vult
01/21/2022 08:32:10
if you haven't talked about it like that then
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Deus_Vult
01/21/2022 08:32:27
this , is just defining what does it mean to cross product 2 vectors
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300227bf350f4dc9a3b7d014cd7c9f02
481,266,434,635,202,560
KillerWhale2498
01/21/2022 08:32:43
Yes, is all definitions.
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9bfb1292b6cb4f9d844baf81546ce20d
700,565,896,103,592,000
γ•γ‚ˆγ‚Š
01/21/2022 09:07:33
I don't understand what this problems means.
https://cdn.discordapp.c…20120_200431.jpg
Screenshot_20220120_200431.jpg
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9bfb1292b6cb4f9d844baf81546ce20d
692,654,133,785,657,300
Alexander42
01/21/2022 09:20:23
You have a circle with a fixed point U (position of Ur). Then you move a point Z (Zenith) once around the circle. Now V (Viz) is the midpoint between U and Z. When Z moves around the circle, then also V moves around. You now have to figure out, in which way V moves, depending on Z. You know that the trace of V encloses...
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9bfb1292b6cb4f9d844baf81546ce20d
683,965,476,203,921,400
queue
01/21/2022 09:21:27
mildly frustrating who they named zenith
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help-1
9bfb1292b6cb4f9d844baf81546ce20d
700,565,896,103,592,000
γ•γ‚ˆγ‚Š
01/21/2022 09:23:34
Really seems complicated due to the wording
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help-1
9bfb1292b6cb4f9d844baf81546ce20d
700,565,896,103,592,000
γ•γ‚ˆγ‚Š
01/21/2022 09:29:22
Explain please. how to get the area asked.
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help-1
9bfb1292b6cb4f9d844baf81546ce20d
692,654,133,785,657,300
Alexander42
01/21/2022 09:30:15
ok, start by drawing a circle and a point U for Ur
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help-1
9bfb1292b6cb4f9d844baf81546ce20d
692,654,133,785,657,300
Alexander42
01/21/2022 09:31:47
for U of course
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help-1
9bfb1292b6cb4f9d844baf81546ce20d
700,565,896,103,592,000
γ•γ‚ˆγ‚Š
01/21/2022 09:32:27
Ok
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help-1
9bfb1292b6cb4f9d844baf81546ce20d
692,654,133,785,657,300
Alexander42
01/21/2022 09:32:33
then take 10 different positions for Z and always plot the middle point between U and Z
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help-1
9bfb1292b6cb4f9d844baf81546ce20d
692,654,133,785,657,300
Alexander42
01/21/2022 09:33:55
do you see a pattern with the middle points?
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help-1
9bfb1292b6cb4f9d844baf81546ce20d
700,565,896,103,592,000
γ•γ‚ˆγ‚Š
01/21/2022 09:35:39
Any positions right
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help-1
9bfb1292b6cb4f9d844baf81546ce20d
692,654,133,785,657,300
Alexander42
01/21/2022 09:36:19
et is easier if you distribute them evenly aroud the circle
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help-1
9bfb1292b6cb4f9d844baf81546ce20d
700,565,896,103,592,000
γ•γ‚ˆγ‚Š
01/21/2022 09:38:40
The middle points can be at the once the position of Z?
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help-1
9bfb1292b6cb4f9d844baf81546ce20d
692,654,133,785,657,300
Alexander42
01/21/2022 09:39:05
for each position of Z you get one middle point
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help-1
9bfb1292b6cb4f9d844baf81546ce20d
700,565,896,103,592,000
γ•γ‚ˆγ‚Š
01/21/2022 09:40:05
Yes
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help-1
9bfb1292b6cb4f9d844baf81546ce20d
700,565,896,103,592,000
γ•γ‚ˆγ‚Š
01/21/2022 09:41:43
And it's always between
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help-1
9bfb1292b6cb4f9d844baf81546ce20d
700,565,896,103,592,000
γ•γ‚ˆγ‚Š
01/21/2022 09:44:02
Now what does it have to do with the problem?
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help-1
9bfb1292b6cb4f9d844baf81546ce20d
692,654,133,785,657,300
Alexander42
01/21/2022 09:49:31
the middle points are the points, where Viz is, and the points on the circle are the points where Zenith is
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help-1
9bfb1292b6cb4f9d844baf81546ce20d
692,654,133,785,657,300
Alexander42
01/21/2022 09:50:30
with your drawing you might see, that Viz is moving around a certain shape
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help-1
9bfb1292b6cb4f9d844baf81546ce20d
700,565,896,103,592,000
γ•γ‚ˆγ‚Š
01/21/2022 09:53:39
Ok wait
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help-1
9bfb1292b6cb4f9d844baf81546ce20d
700,565,896,103,592,000
γ•γ‚ˆγ‚Š
01/21/2022 09:55:15
A semicircle
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