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716
help-10
86d9cc9e2eac4dd4960d43f19a1bc3b4
769,207,186,609,274,900
Jaden916
02/15/2022 19:54:39
Kinda, so would that all be the sum?
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0
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null
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716
help-10
86d9cc9e2eac4dd4960d43f19a1bc3b4
251,854,584,597,708,800
PapaBread
02/15/2022 19:54:57
Yeah thats about as simple as you can get it without using one of the special sum formulas
0
1
null
null
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null
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716
help-10
86d9cc9e2eac4dd4960d43f19a1bc3b4
769,207,186,609,274,900
Jaden916
02/15/2022 19:55:07
Okay
1
0
null
null
null
null
null
716
help-10
86d9cc9e2eac4dd4960d43f19a1bc3b4
251,854,584,597,708,800
PapaBread
02/15/2022 19:55:21
So then do you have a sum formula for an exponential like that?
0
1
null
null
null
null
null
716
help-10
86d9cc9e2eac4dd4960d43f19a1bc3b4
251,854,584,597,708,800
PapaBread
02/15/2022 19:55:26
I would hope so
0
1
null
null
null
null
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716
help-10
86d9cc9e2eac4dd4960d43f19a1bc3b4
769,207,186,609,274,900
Jaden916
02/15/2022 19:55:48
I don’t.
1
0
null
null
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null
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716
help-10
86d9cc9e2eac4dd4960d43f19a1bc3b4
251,854,584,597,708,800
PapaBread
02/15/2022 19:55:51
Hmm
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1
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716
help-10
86d9cc9e2eac4dd4960d43f19a1bc3b4
251,854,584,597,708,800
PapaBread
02/15/2022 19:56:02
Youve never heard of one and your teacher hasnt taught you anything like that?
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1
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716
help-10
86d9cc9e2eac4dd4960d43f19a1bc3b4
261,933,205,387,477,000
riemann
02/15/2022 19:56:22
this is very similar to the name of the sum
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1
null
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716
help-10
86d9cc9e2eac4dd4960d43f19a1bc3b4
769,207,186,609,274,900
Jaden916
02/15/2022 19:56:35
No.
1
0
null
null
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null
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716
help-10
86d9cc9e2eac4dd4960d43f19a1bc3b4
251,854,584,597,708,800
PapaBread
02/15/2022 19:57:06
Oh wait is there a formula directly for that sum?
0
1
null
null
null
null
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716
help-10
86d9cc9e2eac4dd4960d43f19a1bc3b4
251,854,584,597,708,800
PapaBread
02/15/2022 19:57:23
Well I guess you know most of how its derived now
0
1
null
null
null
null
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716
help-10
86d9cc9e2eac4dd4960d43f19a1bc3b4
769,207,186,609,274,900
Jaden916
02/15/2022 19:57:36
Yeah
1
0
null
null
null
null
null
716
help-10
86d9cc9e2eac4dd4960d43f19a1bc3b4
251,854,584,597,708,800
PapaBread
02/15/2022 19:57:43
https://cdn.discordapp.c…beef1367816e.png
909e4f1741a983fd4b42beef1367816e.png
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1
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716
help-10
86d9cc9e2eac4dd4960d43f19a1bc3b4
251,854,584,597,708,800
PapaBread
02/15/2022 19:57:53
Im guessing youre supposed to apply this formula?
0
1
null
null
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null
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716
help-10
86d9cc9e2eac4dd4960d43f19a1bc3b4
769,207,186,609,274,900
Jaden916
02/15/2022 19:58:20
It looks familiar so probably.
1
0
null
null
null
null
null
716
help-10
86d9cc9e2eac4dd4960d43f19a1bc3b4
251,854,584,597,708,800
PapaBread
02/15/2022 19:58:26
Reasonable
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716
help-10
86d9cc9e2eac4dd4960d43f19a1bc3b4
251,854,584,597,708,800
PapaBread
02/15/2022 19:58:33
So yeah thats basically all youre doing in this question
0
1
null
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null
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716
help-10
86d9cc9e2eac4dd4960d43f19a1bc3b4
769,207,186,609,274,900
Jaden916
02/15/2022 19:58:56
Ok
1
0
null
null
null
null
null
716
help-10
86d9cc9e2eac4dd4960d43f19a1bc3b4
251,854,584,597,708,800
PapaBread
02/15/2022 19:59:03
Or at least I would assume so
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1
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716
help-10
86d9cc9e2eac4dd4960d43f19a1bc3b4
769,207,186,609,274,900
Jaden916
02/15/2022 19:59:35
Ok
1
0
769,207,186,609,274,900
Jaden916
7007
Jaden916
false
717
help-10
0409e41867d5448899c1fb69ecee505b
531,559,878,930,595,900
Froggythewizard
02/15/2022 20:44:06
Why in nCr do u need to divide by r!
1
0
null
null
null
null
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717
help-10
0409e41867d5448899c1fb69ecee505b
503,047,891,271,680,000
BlokirKominfo
02/15/2022 20:44:47
Definition
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1
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717
help-10
0409e41867d5448899c1fb69ecee505b
531,559,878,930,595,900
Froggythewizard
02/15/2022 20:45:20
but like logically why does n! have all of the arrangments
1
0
null
null
null
null
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717
help-10
0409e41867d5448899c1fb69ecee505b
531,559,878,930,595,900
Froggythewizard
02/15/2022 20:45:37
i get that dividing by r! makes them unique
1
0
null
null
null
null
null
717
help-10
0409e41867d5448899c1fb69ecee505b
503,047,891,271,680,000
BlokirKominfo
02/15/2022 20:46:29
It's given n items, pick r items without regard of order.
0
1
null
null
null
null
null
717
help-10
0409e41867d5448899c1fb69ecee505b
531,559,878,930,595,900
Froggythewizard
02/15/2022 20:46:57
Yeah but why does n! give u all the possible ways that n through 1 items can be arranged
1
0
null
null
null
null
null
717
help-10
0409e41867d5448899c1fb69ecee505b
503,047,891,271,680,000
BlokirKominfo
02/15/2022 20:48:24
Well, for 1 item there are 1!=1 ways on how to reorder item.
0
1
null
null
null
null
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717
help-10
0409e41867d5448899c1fb69ecee505b
503,047,891,271,680,000
BlokirKominfo
02/15/2022 20:49:26
Then given there are n! way to reorder n items, to calculate how many reorderings possible for n+1 items, do the following:
0
1
null
null
null
null
null
717
help-10
0409e41867d5448899c1fb69ecee505b
503,047,891,271,680,000
BlokirKominfo
02/15/2022 20:50:28
1. Order n items, there are n! ways to do it.
0
1
null
null
null
null
null
717
help-10
0409e41867d5448899c1fb69ecee505b
503,047,891,271,680,000
BlokirKominfo
02/15/2022 20:51:06
2. Place one more items either between items or before and after the whole item. There are n+1 slots available
0
1
null
null
null
null
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717
help-10
0409e41867d5448899c1fb69ecee505b
531,559,878,930,595,900
Froggythewizard
02/15/2022 20:51:18
Is it like because there are N ways for the first part of order N-1 option for second and so on
1
0
null
null
null
null
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717
help-10
0409e41867d5448899c1fb69ecee505b
531,559,878,930,595,900
Froggythewizard
02/15/2022 20:51:23
so u multiply out
1
0
null
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717
help-10
0409e41867d5448899c1fb69ecee505b
503,047,891,271,680,000
BlokirKominfo
02/15/2022 20:52:05
Yeah, like that.
0
1
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717
help-10
0409e41867d5448899c1fb69ecee505b
531,559,878,930,595,900
Froggythewizard
02/15/2022 20:53:05
and then with combinations u divide by the (n-r)! so it will stop with how many items or numbers or letters u actually care about ordering and then divide by r! to get rid of the nondistinct orders
1
0
null
null
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717
help-10
0409e41867d5448899c1fb69ecee505b
503,047,891,271,680,000
BlokirKominfo
02/15/2022 20:53:30
Yeah, like that.
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1
503,047,891,271,680,000
BlokirKominfo
0183
BlokirKominfo
false
718
help-10
130866dab4574a518f08d9edf61995fc
611,418,694,245,154,800
aph
02/15/2022 21:39:27
``` 3. Write down the possible number(s) of significant figures for each of the following approximate values. (4 marks) (a) 23 570 (b) 100 600 (c) 2000, correct to the nearest ten (d) 0.093 60 ``` i'm not sure what it's asking 😖
1
0
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null
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718
help-10
130866dab4574a518f08d9edf61995fc
611,418,694,245,154,800
aph
02/15/2022 21:40:10
do i write the value of those sig.figs? like `a) 5`
1
0
null
null
null
null
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718
help-10
130866dab4574a518f08d9edf61995fc
611,418,694,245,154,800
aph
02/15/2022 21:40:15
i dont really get the question
1
0
null
null
null
null
null
718
help-10
130866dab4574a518f08d9edf61995fc
485,903,210,272,391,200
dldh06
02/15/2022 21:42:01
Why is it 4 marks?
0
1
null
null
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null
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718
help-10
130866dab4574a518f08d9edf61995fc
611,418,694,245,154,800
aph
02/15/2022 21:42:19
it's an assigment
1
0
null
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null
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718
help-10
130866dab4574a518f08d9edf61995fc
485,903,210,272,391,200
dldh06
02/15/2022 21:42:27
Like a test?
0
1
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718
help-10
130866dab4574a518f08d9edf61995fc
611,418,694,245,154,800
aph
02/15/2022 21:42:34
not a test
1
0
null
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718
help-10
130866dab4574a518f08d9edf61995fc
485,903,210,272,391,200
dldh06
02/15/2022 21:42:55
But pretty sure it's asking for sig figs for each number
0
1
null
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null
null
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718
help-10
130866dab4574a518f08d9edf61995fc
611,418,694,245,154,800
aph
02/15/2022 21:43:03
thanks
1
0
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718
help-10
130866dab4574a518f08d9edf61995fc
611,418,694,245,154,800
aph
02/15/2022 21:43:04
:D
1
0
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718
help-10
130866dab4574a518f08d9edf61995fc
611,418,694,245,154,800
aph
02/15/2022 21:43:14
.close
1
0
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719
help-10
6414456d82e54aacb10c69ce38934e63
611,418,694,245,154,800
aph
02/15/2022 21:43:35
.close
1
0
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null
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719
help-10
6414456d82e54aacb10c69ce38934e63
611,418,694,245,154,800
aph
02/15/2022 21:43:42
hm
1
0
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719
help-10
6414456d82e54aacb10c69ce38934e63
485,903,210,272,391,200
dldh06
02/15/2022 21:43:45
It's closing, give the bot a few minutes
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help-10
6414456d82e54aacb10c69ce38934e63
611,418,694,245,154,800
aph
02/15/2022 21:43:51
right
1
0
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719
help-10
6414456d82e54aacb10c69ce38934e63
311,917,682,645,532,700
duchexx
02/15/2022 21:54:23
The mean number of TV sets is 2.24. The standard deviation is 1.1. A sample of 90 households is drawn. Calculate the The 10th percentile of the sample mean using an excel function
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611,418,694,245,154,800
aph
8103
aph
false
720
help-10
1c847aba76db463b8f3ed428110f56b3
239,571,360,169,459,700
ykj3
02/15/2022 23:59:45
does the wronskian have a first order relation with any of its derivatives besides its first?
1
0
485,903,210,272,391,200
dldh06
2659
dldh06
false
720
help-10
1c847aba76db463b8f3ed428110f56b3
239,571,360,169,459,700
ykj3
02/16/2022 00:01:19
meaning, is $W + a(x)W^{(n)} = 0$ for any $n$ besides 1, where $W^{(n)}$ represents the $n$th derivative of the Wronskian?
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help-10
1c847aba76db463b8f3ed428110f56b3
510,789,298,321,096,700
TeXit
02/16/2022 00:01:41
**ykj3**
https://cdn.discordapp.c…360169459712.png
239571360169459712.png
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help-10
1c847aba76db463b8f3ed428110f56b3
295,654,938,741,309,440
M8732
02/16/2022 00:08:31
➡️ #❓how-to-get-help, please open a new help channel.
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help-10
1c847aba76db463b8f3ed428110f56b3
239,571,360,169,459,700
ykj3
02/16/2022 00:38:17
.close
1
0
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722
help-10
64155be48f3c4ae7827570675fb0015d
800,652,804,384,620,500
lamferr
02/16/2022 01:13:00
.close
1
0
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help-10
64155be48f3c4ae7827570675fb0015d
896,927,649,602,101,200
Kosta
02/16/2022 01:24:18
Shouldn’t m=0 be excluded as well?
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help-10
64155be48f3c4ae7827570675fb0015d
896,927,649,602,101,200
Kosta
02/16/2022 01:24:38
https://cdn.discordapp.c…2E370A6B3EFB.jpg
528A6A15-3A30-422D-A003-2E370A6B3EFB.jpg
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help-10
64155be48f3c4ae7827570675fb0015d
183,668,144,404,037,630
Ann
02/16/2022 01:24:48
which part?
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help-10
64155be48f3c4ae7827570675fb0015d
183,668,144,404,037,630
Ann
02/16/2022 01:25:54
@Kosta
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help-10
64155be48f3c4ae7827570675fb0015d
896,927,649,602,101,200
Kosta
02/16/2022 01:26:01
For 5a
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help-10
64155be48f3c4ae7827570675fb0015d
896,927,649,602,101,200
Kosta
02/16/2022 01:26:06
@Ann
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help-10
64155be48f3c4ae7827570675fb0015d
183,668,144,404,037,630
Ann
02/16/2022 01:26:23
so you think m=0 SHOULDN'T be part of the answer for part a? do i understand you correctly?
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help-10
64155be48f3c4ae7827570675fb0015d
896,927,649,602,101,200
Kosta
02/16/2022 01:26:33
Yes
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help-10
64155be48f3c4ae7827570675fb0015d
183,668,144,404,037,630
Ann
02/16/2022 01:26:36
why?
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help-10
64155be48f3c4ae7827570675fb0015d
896,927,649,602,101,200
Kosta
02/16/2022 01:26:53
Because when we rearrange the equation
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210,095,160,623,628,300
Frizzzle
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64155be48f3c4ae7827570675fb0015d
896,927,649,602,101,200
Kosta
02/16/2022 01:27:00
Or actually
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help-10
64155be48f3c4ae7827570675fb0015d
896,927,649,602,101,200
Kosta
02/16/2022 01:27:09
Because it will make the function undefined
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help-10
64155be48f3c4ae7827570675fb0015d
183,668,144,404,037,630
Ann
02/16/2022 01:27:13
look what happens when we set m to 0. here's the system of equations we get: ``` -2x = 1 3x - 2y = 0 ``` this system is dead easy to solve
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help-10
64155be48f3c4ae7827570675fb0015d
896,927,649,602,101,200
Kosta
02/16/2022 01:27:28
https://cdn.discordapp.c…843146EF70AE.jpg
34D9EADB-FD31-4485-B3F7-843146EF70AE.jpg
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help-10
64155be48f3c4ae7827570675fb0015d
183,668,144,404,037,630
Ann
02/16/2022 01:27:32
are you sure that you aren't doing something like _dividing both sides by m_ in doing your rearrangement?
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help-10
64155be48f3c4ae7827570675fb0015d
183,668,144,404,037,630
Ann
02/16/2022 01:27:41
that would cause complications for m=0 specifically.
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Kosta
9595
Kosta
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722
help-10
64155be48f3c4ae7827570675fb0015d
896,927,649,602,101,200
Kosta
02/16/2022 01:27:43
Yeah so I make y the subject
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help-10
64155be48f3c4ae7827570675fb0015d
183,668,144,404,037,630
Ann
02/16/2022 01:27:54
okay, see, if you're doing that, then you have to consider m=0 separately.
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183,668,144,404,037,630
Ann
0413
Ann
false
722
help-10
64155be48f3c4ae7827570675fb0015d
183,668,144,404,037,630
Ann
02/16/2022 01:28:08
because the way you're going about it only works when m _isn't_ 0
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1
null
null
null
null
null
722
help-10
64155be48f3c4ae7827570675fb0015d
896,927,649,602,101,200
Kosta
02/16/2022 01:28:18
If the question was written in the form that made y the subject
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1
null
null
null
null
null
722
help-10
64155be48f3c4ae7827570675fb0015d
896,927,649,602,101,200
Kosta
02/16/2022 01:28:28
Then I would consider m=0 being excluded?
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1
null
null
null
null
null
722
help-10
64155be48f3c4ae7827570675fb0015d
183,668,144,404,037,630
Ann
02/16/2022 01:28:34
if the question were written as y = (2x+1)/m then that would be a different story
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null
null
null
null
null
722
help-10
64155be48f3c4ae7827570675fb0015d
183,668,144,404,037,630
Ann
02/16/2022 01:28:51
because in _that_ case yes m=0 would be excluded a priori
0
1
null
null
null
null
null
722
help-10
64155be48f3c4ae7827570675fb0015d
896,927,649,602,101,200
Kosta
02/16/2022 01:28:55
Ok right
0
1
null
null
null
null
null
722
help-10
64155be48f3c4ae7827570675fb0015d
896,927,649,602,101,200
Kosta
02/16/2022 01:28:57
Thank u
0
1
null
null
null
null
null
723
help-10
56d6358ac4294567887c64db4e8d0f56
249,469,789,578,330,140
ain't it
02/16/2022 02:04:10
hi guys does anyone know how to solve section d question 1
https://cdn.discordapp.c…92fc516c01e5.png
9873a96e-a769-4b27-96a9-92fc516c01e5.png
1
0
null
null
null
null
null
723
help-10
56d6358ac4294567887c64db4e8d0f56
235,369,247,323,193,340
DETOX
02/16/2022 02:09:59
let me get my magnifying glass
0
1
null
null
null
null
null
723
help-10
56d6358ac4294567887c64db4e8d0f56
235,369,247,323,193,340
DETOX
02/16/2022 02:10:51
implicit differentiation ?
0
1
null
null
null
null
null
723
help-10
56d6358ac4294567887c64db4e8d0f56
249,469,789,578,330,140
ain't it
02/16/2022 02:16:35
differentiate everything with respect to y?
1
0
null
null
null
null
null
723
help-10
56d6358ac4294567887c64db4e8d0f56
249,469,789,578,330,140
ain't it
02/16/2022 03:08:51
@Helpers
1
0
null
null
null
null
null
723
help-10
56d6358ac4294567887c64db4e8d0f56
880,503,100,711,010,300
Rylo
02/16/2022 04:01:17
really doesn’t matter. you both dx/dy and dy/dx have to multiply to give you -1 so it’s upto you really
0
1
null
null
null
null
null
723
help-10
56d6358ac4294567887c64db4e8d0f56
880,503,100,711,010,300
Rylo
02/16/2022 04:01:48
because one is the reciprocal of the other and -1 is it’s own reciprocal
0
1
null
null
null
null
null
723
help-10
56d6358ac4294567887c64db4e8d0f56
814,519,011,874,177,000
moose
02/16/2022 04:02:47
https://cdn.discordapp.c…3139/unknown.png
unknown.png
0
1
null
null
null
null
null
723
help-10
56d6358ac4294567887c64db4e8d0f56
814,519,011,874,177,000
moose
02/16/2022 04:02:53
guys i need help
0
1
null
null
null
null
null
723
help-10
56d6358ac4294567887c64db4e8d0f56
551,807,466,631,987,200
Mat
02/16/2022 04:06:16
What's the derivative of cos^2(x) ?
0
1
null
null
null
null
null
723
help-10
56d6358ac4294567887c64db4e8d0f56
814,519,011,874,177,000
moose
02/16/2022 04:10:38
is it -sin(2x)?
0
1
null
null
null
null
null
723
help-10
56d6358ac4294567887c64db4e8d0f56
551,807,466,631,987,200
Mat
02/16/2022 04:11:54
Yes! So, do you have any ideas now?
0
1
null
null
null
null
null
723
help-10
56d6358ac4294567887c64db4e8d0f56
814,519,011,874,177,000
moose
02/16/2022 04:13:20
absolutely no idea
0
1
null
null
null
null
null
723
help-10
56d6358ac4294567887c64db4e8d0f56
551,807,466,631,987,200
Mat
02/16/2022 04:14:07
You have sin(2x) at the numerator
0
1
null
null
null
null
null
723
help-10
56d6358ac4294567887c64db4e8d0f56
814,519,011,874,177,000
moose
02/16/2022 04:14:47
am i gonna substitute it?
0
1
null
null
null
null
null
723
help-10
56d6358ac4294567887c64db4e8d0f56
551,807,466,631,987,200
Mat
02/16/2022 04:15:09
Try the substitution u=cos^2(x)
0
1
235,369,247,323,193,340
DETOX
0236
DETOX
false
723
help-10
56d6358ac4294567887c64db4e8d0f56
814,519,011,874,177,000
moose
02/16/2022 04:16:45
https://cdn.discordapp.c…1714/unknown.png
unknown.png
0
1
null
null
null
null
null