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help-10
d9ad4c1f5fa64314b6fbf117234f4923
913,475,640,232,149,100
Zvonko Rohatinski
03/27/2022 13:54:52
https://cdn.discordapp.c…3388/unknown.png
unknown.png
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help-10
d9ad4c1f5fa64314b6fbf117234f4923
913,475,640,232,149,100
Zvonko Rohatinski
03/27/2022 13:54:53
here is also a polynomial
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help-10
d9ad4c1f5fa64314b6fbf117234f4923
715,020,322,541,273,100
Phearia
03/27/2022 13:55:19
Yah this one's a bit easier to explain
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help-10
d9ad4c1f5fa64314b6fbf117234f4923
715,020,322,541,273,100
Phearia
03/27/2022 13:55:29
U cant divide a number by 0, right?
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help-10
d9ad4c1f5fa64314b6fbf117234f4923
913,475,640,232,149,100
Zvonko Rohatinski
03/27/2022 13:55:33
ye
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help-10
d9ad4c1f5fa64314b6fbf117234f4923
715,020,322,541,273,100
Phearia
03/27/2022 13:55:54
Basically it's just stating that u cant have x be -3 or -2 cuz that would make it 0 on the bottom
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help-10
d9ad4c1f5fa64314b6fbf117234f4923
715,020,322,541,273,100
Phearia
03/27/2022 13:56:06
Cuz what u said, the polynomial would end up giving 0
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help-10
d9ad4c1f5fa64314b6fbf117234f4923
715,020,322,541,273,100
Phearia
03/27/2022 13:56:32
Welp, im gonna head to bed it's really late for me
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help-10
d9ad4c1f5fa64314b6fbf117234f4923
913,475,640,232,149,100
Zvonko Rohatinski
03/27/2022 13:56:55
ait
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help-10
d9ad4c1f5fa64314b6fbf117234f4923
913,475,640,232,149,100
Zvonko Rohatinski
03/27/2022 13:57:04
fr fr
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Zvonko Rohatinski
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help-10
d9ad4c1f5fa64314b6fbf117234f4923
715,020,322,541,273,100
Phearia
03/27/2022 13:58:09
I wish I could help more thooo
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help-10
15b869492f5e4eb3a1bdd2005a62ac53
357,200,072,355,872,800
JerryV2
03/27/2022 14:30:40
idk
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help-10
68b23e6dab994dcd9293ea65a4175b31
303,052,934,621,560,800
MasakaBakana
11/10/2021 15:50:00
Super basic Question. If I have events A , B what does a boolean combination of those two events mean
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help-10
68b23e6dab994dcd9293ea65a4175b31
251,854,584,597,708,800
PapaBread
11/10/2021 16:00:48
Combination is kinda a weird word for it
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help-10
68b23e6dab994dcd9293ea65a4175b31
251,854,584,597,708,800
PapaBread
11/10/2021 16:00:53
Do you mean intersection or union
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help-10
68b23e6dab994dcd9293ea65a4175b31
303,052,934,621,560,800
MasakaBakana
11/10/2021 16:02:02
So if I want to say event C is independent of any boolean combination of the events A,B, Does that mean the probabity p(C| A \cap B) = p(C)
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help-10
68b23e6dab994dcd9293ea65a4175b31
251,854,584,597,708,800
PapaBread
11/10/2021 16:03:33
Uhh
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help-10
68b23e6dab994dcd9293ea65a4175b31
251,854,584,597,708,800
PapaBread
11/10/2021 16:03:40
That seems like it would make sense
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Zvonko Rohatinski
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help-10
68b23e6dab994dcd9293ea65a4175b31
251,854,584,597,708,800
PapaBread
11/10/2021 16:04:03
But that's a really weird way to say that
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help-10
68b23e6dab994dcd9293ea65a4175b31
251,854,584,597,708,800
PapaBread
11/10/2021 16:04:20
"Any boolean combination" would imply like anything
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help-10
68b23e6dab994dcd9293ea65a4175b31
251,854,584,597,708,800
PapaBread
11/10/2021 16:04:23
Not just intersection
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help-10
68b23e6dab994dcd9293ea65a4175b31
303,052,934,621,560,800
MasakaBakana
11/10/2021 16:04:56
kk i got it now
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help-10
68b23e6dab994dcd9293ea65a4175b31
303,052,934,621,560,800
MasakaBakana
11/10/2021 16:04:59
.close
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Zvonko Rohatinski
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help-10
f00a1a07977c42cd92b34391601afc21
357,200,072,355,872,800
JerryV2
03/27/2022 14:30:51
so
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help-10
f00a1a07977c42cd92b34391601afc21
357,200,072,355,872,800
JerryV2
03/27/2022 14:31:06
how will i calculate it?
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help-10
f00a1a07977c42cd92b34391601afc21
357,200,072,355,872,800
JerryV2
03/27/2022 14:44:16
Two functions are given by the regulations f (x) = 2x^3−150x and g (x) = x^2 + kx + 25−500, where k is a constant. The function f has a local maximum at the same point as g has a local minimum. Based on this information, determine the value of k.
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help-10
f00a1a07977c42cd92b34391601afc21
357,200,072,355,872,800
JerryV2
03/27/2022 14:53:46
I tried to find k, by differentiating f(x), g(x) -> f'(x), g'(x) then finding an expression for x1,2 from: f'(x1) = 0, g'(x2) = 0 and solving the equation x1 = x2 to find k
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help-10
f00a1a07977c42cd92b34391601afc21
357,200,072,355,872,800
JerryV2
03/27/2022 14:53:53
but I couldnt get it right
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help-10
f00a1a07977c42cd92b34391601afc21
357,200,072,355,872,800
JerryV2
03/27/2022 14:53:56
who can help?
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help-10
f00a1a07977c42cd92b34391601afc21
357,200,072,355,872,800
JerryV2
03/27/2022 15:05:16
@Helpers
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help-10
f00a1a07977c42cd92b34391601afc21
261,933,205,387,477,000
riemann
03/27/2022 15:06:40
show your work and someone can review it
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help-10
f00a1a07977c42cd92b34391601afc21
357,200,072,355,872,800
JerryV2
03/27/2022 15:10:01
uhm 2 sec
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Omegabet_
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help-10
f00a1a07977c42cd92b34391601afc21
357,200,072,355,872,800
JerryV2
03/27/2022 15:10:18
files too big
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help-10
f00a1a07977c42cd92b34391601afc21
383,050,120,842,969,100
Paradox
03/27/2022 15:10:39
take pictures w/ phone or something
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help-10
f00a1a07977c42cd92b34391601afc21
357,200,072,355,872,800
JerryV2
03/27/2022 15:12:08
yeah ok gimme a minute
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help-10
f00a1a07977c42cd92b34391601afc21
261,933,205,387,477,000
riemann
03/27/2022 15:12:22
use an app to downsize it too
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help-10
f00a1a07977c42cd92b34391601afc21
383,050,120,842,969,100
Paradox
03/27/2022 15:13:48
how do you know you couldn't get it right
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help-10
f00a1a07977c42cd92b34391601afc21
383,050,120,842,969,100
Paradox
03/27/2022 15:13:52
is there like an answer key
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help-10
f00a1a07977c42cd92b34391601afc21
383,050,120,842,969,100
Paradox
03/27/2022 15:13:58
or answer choice list
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help-10
f00a1a07977c42cd92b34391601afc21
357,200,072,355,872,800
JerryV2
03/27/2022 15:14:52
i got 3
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help-10
f00a1a07977c42cd92b34391601afc21
357,200,072,355,872,800
JerryV2
03/27/2022 15:14:56
entered
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help-10
f00a1a07977c42cd92b34391601afc21
357,200,072,355,872,800
JerryV2
03/27/2022 15:14:58
it said wrong
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help-10
f00a1a07977c42cd92b34391601afc21
383,050,120,842,969,100
Paradox
03/27/2022 15:15:04
do you have multiple attempts
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help-10
f00a1a07977c42cd92b34391601afc21
383,050,120,842,969,100
Paradox
03/27/2022 15:15:06
how did you get 3
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help-10
f00a1a07977c42cd92b34391601afc21
357,200,072,355,872,800
JerryV2
03/27/2022 15:15:14
idk either
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help-10
f00a1a07977c42cd92b34391601afc21
357,200,072,355,872,800
JerryV2
03/27/2022 15:15:16
😭
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help-10
f00a1a07977c42cd92b34391601afc21
357,200,072,355,872,800
JerryV2
03/27/2022 15:15:20
that's why i need help
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help-10
f00a1a07977c42cd92b34391601afc21
357,200,072,355,872,800
JerryV2
03/27/2022 15:15:30
1 attempt actually:/
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help-10
f00a1a07977c42cd92b34391601afc21
357,200,072,355,872,800
JerryV2
03/27/2022 15:15:33
so cant blow it
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help-10
f00a1a07977c42cd92b34391601afc21
383,050,120,842,969,100
Paradox
03/27/2022 15:17:21
ok so i don't take calc but i think i have an idea
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help-10
f00a1a07977c42cd92b34391601afc21
383,050,120,842,969,100
Paradox
03/27/2022 15:17:51
So your idea of differentiating f(x) and g(x) is what I'm thinking of
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help-10
f00a1a07977c42cd92b34391601afc21
383,050,120,842,969,100
Paradox
03/27/2022 15:18:06
and you know that the critical points of a function are when the derivatives are equal to 0 right
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help-10
f00a1a07977c42cd92b34391601afc21
383,050,120,842,969,100
Paradox
03/27/2022 15:18:26
so taking the derivatives of your functions you get f'(x) = 6x^2-150 g'(x) = 2x+k
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help-10
f00a1a07977c42cd92b34391601afc21
383,050,120,842,969,100
Paradox
03/27/2022 15:22:13
So setting f'(x) = 0 we get 6x^2-150 = 0 so x = +/- 5 right
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help-10
f00a1a07977c42cd92b34391601afc21
383,050,120,842,969,100
Paradox
03/27/2022 15:23:59
So if we plug in a value such as -6, we see that f'(x) will be > 0 so it will be increasing up until x=-5 so that means x=-5 is a local maximum...I think
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Paradox
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help-10
f00a1a07977c42cd92b34391601afc21
383,050,120,842,969,100
Paradox
03/27/2022 15:24:27
So then plugging in x = -5 to g'(x) We get 2(-5) + k = 0...so k must be 10 I think...?
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JerryV2
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JerryV2
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help-10
f00a1a07977c42cd92b34391601afc21
383,050,120,842,969,100
Paradox
03/27/2022 15:24:43
This might be completely wrong idk
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JerryV2
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help-10
f00a1a07977c42cd92b34391601afc21
383,050,120,842,969,100
Paradox
03/27/2022 15:27:56
it might be k=-10
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help-10
f00a1a07977c42cd92b34391601afc21
383,050,120,842,969,100
Paradox
03/27/2022 15:27:58
hm
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help-10
f00a1a07977c42cd92b34391601afc21
383,050,120,842,969,100
Paradox
03/27/2022 15:29:41
https://cdn.discordapp.c…4986/unknown.png
unknown.png
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help-10
f00a1a07977c42cd92b34391601afc21
383,050,120,842,969,100
Paradox
03/27/2022 15:29:57
https://cdn.discordapp.c…6766/unknown.png
unknown.png
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help-10
f00a1a07977c42cd92b34391601afc21
383,050,120,842,969,100
Paradox
03/27/2022 15:30:29
that's weird though
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help-10
f00a1a07977c42cd92b34391601afc21
383,050,120,842,969,100
Paradox
03/27/2022 15:30:39
because wouldn't both of those be a local min...
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help-10
f00a1a07977c42cd92b34391601afc21
383,050,120,842,969,100
Paradox
03/27/2022 15:30:44
so it can't be k=-10
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help-10
f00a1a07977c42cd92b34391601afc21
383,050,120,842,969,100
Paradox
03/27/2022 15:32:42
no what the hell it has to be k=10...am i stupid...?
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Paradox
5284
Paradox
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help-10
f00a1a07977c42cd92b34391601afc21
383,050,120,842,969,100
Paradox
03/27/2022 15:32:48
i don't understand...
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help-10
f00a1a07977c42cd92b34391601afc21
383,050,120,842,969,100
Paradox
03/27/2022 15:32:50
what am i doing wrong wtf
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help-10
f00a1a07977c42cd92b34391601afc21
383,050,120,842,969,100
Paradox
03/27/2022 15:33:00
@JerryV2 do you see the error in my ways lmao
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Paradox
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Paradox
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help-10
f00a1a07977c42cd92b34391601afc21
383,050,120,842,969,100
Paradox
03/27/2022 15:33:54
Ok let's review... g(x) = x^2+kx+25-500 has a local minimum at x = -b/2a x = -k/2 We're given f (x) = 2x^3−150x
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help-10
f00a1a07977c42cd92b34391601afc21
383,050,120,842,969,100
Paradox
03/27/2022 15:34:29
the local maximum of f is the same as the local min of g
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help-10
f00a1a07977c42cd92b34391601afc21
383,050,120,842,969,100
Paradox
03/27/2022 15:34:52
https://cdn.discordapp.c…8230/unknown.png
unknown.png
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help-10
f00a1a07977c42cd92b34391601afc21
383,050,120,842,969,100
Paradox
03/27/2022 15:35:08
local max of f is x =- 5. -5 = -k/2 -10 = -k k = 10...?
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1
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help-10
f00a1a07977c42cd92b34391601afc21
383,050,120,842,969,100
Paradox
03/27/2022 15:35:11
wtf am i doing wrong
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help-10
f00a1a07977c42cd92b34391601afc21
383,050,120,842,969,100
Paradox
03/27/2022 15:36:24
the points are different but they have the same x values...but i don't know what else I'm missing...?
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help-10
f00a1a07977c42cd92b34391601afc21
383,050,120,842,969,100
Paradox
03/27/2022 15:36:26
ugh
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help-10
f00a1a07977c42cd92b34391601afc21
383,050,120,842,969,100
Paradox
03/27/2022 15:36:27
pain.
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help-10
f00a1a07977c42cd92b34391601afc21
383,050,120,842,969,100
Paradox
03/27/2022 15:36:35
someone else more qualified please ping me when you see what i did wrong lmao
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f00a1a07977c42cd92b34391601afc21
357,200,072,355,872,800
JerryV2
03/27/2022 15:45:39
@Paradox
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help-10
f00a1a07977c42cd92b34391601afc21
357,200,072,355,872,800
JerryV2
03/27/2022 15:45:46
I looked
1
0
null
null
null
null
null
1,525
help-10
f00a1a07977c42cd92b34391601afc21
357,200,072,355,872,800
JerryV2
03/27/2022 15:45:47
at it
1
0
null
null
null
null
null
1,525
help-10
f00a1a07977c42cd92b34391601afc21
357,200,072,355,872,800
JerryV2
03/27/2022 15:45:49
and
1
0
null
null
null
null
null
1,525
help-10
f00a1a07977c42cd92b34391601afc21
357,200,072,355,872,800
JerryV2
03/27/2022 15:45:56
seems better than what i did
1
0
null
null
null
null
null
1,525
help-10
f00a1a07977c42cd92b34391601afc21
357,200,072,355,872,800
JerryV2
03/27/2022 15:46:00
but anybody qualified?
1
0
null
null
null
null
null
1,526
help-10
8e29b8aba6d34c4fb63219ee2629cc4f
819,818,586,965,016,600
Jun♾
03/27/2022 18:27:55
I just need help with part a)
https://cdn.discordapp.c…552/IMG_3630.png
IMG_3630.png
1
0
null
null
null
null
null
1,526
help-10
8e29b8aba6d34c4fb63219ee2629cc4f
819,818,586,965,016,600
Jun♾
03/27/2022 18:48:26
@Helpers
1
0
null
null
null
null
null
1,526
help-10
8e29b8aba6d34c4fb63219ee2629cc4f
485,903,210,272,391,200
dldh06
03/27/2022 18:50:30
Did you attempt anything?
0
1
null
null
null
null
null
1,526
help-10
8e29b8aba6d34c4fb63219ee2629cc4f
819,818,586,965,016,600
Jun♾
03/27/2022 18:51:39
I found the inverse of them
1
0
null
null
null
null
null
1,526
help-10
8e29b8aba6d34c4fb63219ee2629cc4f
485,903,210,272,391,200
dldh06
03/27/2022 18:51:56
So for a, what's the inverse function?
0
1
357,200,072,355,872,800
JerryV2
2233
JerryV2
false
1,526
help-10
8e29b8aba6d34c4fb63219ee2629cc4f
819,818,586,965,016,600
Jun♾
03/27/2022 18:52:05
Y=x-7
1
0
null
null
null
null
null
1,526
help-10
8e29b8aba6d34c4fb63219ee2629cc4f
485,903,210,272,391,200
dldh06
03/27/2022 18:52:52
Do you know what $f^{-1}[f(x)]$ means?
0
1
null
null
null
null
null
1,526
help-10
8e29b8aba6d34c4fb63219ee2629cc4f
819,818,586,965,016,600
Jun♾
03/27/2022 18:53:03
Nope I’m confused on that
1
0
null
null
null
null
null
1,526
help-10
8e29b8aba6d34c4fb63219ee2629cc4f
485,903,210,272,391,200
dldh06
03/27/2022 18:53:15
Do you know what composite functions are?
0
1
null
null
null
null
null
1,526
help-10
8e29b8aba6d34c4fb63219ee2629cc4f
819,818,586,965,016,600
Jun♾
03/27/2022 18:53:22
I’ve heard of them
1
0
null
null
null
null
null
1,526
help-10
8e29b8aba6d34c4fb63219ee2629cc4f
819,818,586,965,016,600
Jun♾
03/27/2022 18:53:27
A function in a function?
1
0
null
null
null
null
null
1,526
help-10
8e29b8aba6d34c4fb63219ee2629cc4f
485,903,210,272,391,200
dldh06
03/27/2022 18:53:31
Yes
0
1
null
null
null
null
null
1,526
help-10
8e29b8aba6d34c4fb63219ee2629cc4f
819,818,586,965,016,600
Jun♾
03/27/2022 18:53:34
Oh ok
1
0
null
null
null
null
null
1,526
help-10
8e29b8aba6d34c4fb63219ee2629cc4f
485,903,210,272,391,200
dldh06
03/27/2022 18:53:50
Have you seen (f o g)(x) before?
0
1
null
null
null
null
null
1,526
help-10
8e29b8aba6d34c4fb63219ee2629cc4f
819,818,586,965,016,600
Jun♾
03/27/2022 18:54:04
I don’t think so
1
0
383,050,120,842,969,100
Paradox
5284
Paradox
false
1,526
help-10
8e29b8aba6d34c4fb63219ee2629cc4f
819,818,586,965,016,600
Jun♾
03/27/2022 18:54:27
I might’ve seen it but I don’t know what it is
1
0
null
null
null
null
null
1,526
help-10
8e29b8aba6d34c4fb63219ee2629cc4f
485,903,210,272,391,200
dldh06
03/27/2022 18:54:57
That is a different notation for composite function
0
1
null
null
null
null
null