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Jun1-13 07:36 PM Fredrik 
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General Math

- Math topics not applicable to the categories below. High-school Math
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Please post any and all homework or other textbook-style problems in one of the Homework & Coursework Questions...
Feb23-13 09:23 AM
micromass
1 33,163
I have bumped into some matching-type problems that seem to require some coding, unless someone can point out existing...
Aug16-11 05:57 PM
FaustoMorales
0 743
Some papers in analytic number theory used the notation A\ll_{\epsilon}B where \epsilon seems to be a positive...
Aug16-11 12:12 PM
bpet
0 887
I am a mechanical engineer who hasn't done any mechanical engineering for close to 20 years & hence forgotten all...
Aug16-11 12:07 AM
phiby
2 1,087
Hello, I am a recently graduated high school senior going off to college soon, and over the summer I have spend some...
Aug15-11 08:23 PM
daveyp225
7 1,696
I don't know a method to get the range of any function without the graph. But all I can say that for some functions I...
Aug15-11 04:03 PM
JonF
3 2,526
Let F be a force vector and a an acceleration vector. A vector v(x,y,z) in 3 dimensional space xyz is the set of ...
Aug15-11 03:54 PM
Fredrik
10 1,950
Today I read about the AKS - Primality test in which the simple theorem For gcd(a, n) = 1, we have (X - a)^n\equiv...
Aug15-11 02:08 PM
Yuqing
0 1,042
Hi, I'm trying to simplify the following equation, but I'm not sure it can be! Can anybody help me please? ...
Aug15-11 01:51 PM
I like Serena
3 939
This thread has 2 parts. The first part consists of a problem I'm going to ask brains more intelligent than mine to...
Aug15-11 12:13 AM
Bill Simpson
5 1,220
Hi Everyone, I am looking for some help on this question In Triangle EFG find the value of f, if e=7.3cm g=8.7cm...
Aug14-11 09:30 PM
dalcde
1 1,140
Hello What follows is one way of calculating the square root of 2, as Wikipedia shows: I built the following...
Aug14-11 06:54 PM
agentredlum
12 1,433
The following matrix problem occurred to me. I figured out the answer and would like to pose the problem. It's easy...
Aug14-11 08:27 AM
AlephZero
4 1,330
In general, if α(alpha) and (beta) are roots of eqn. ax^2 +bx +c=0 then for finding the equation whose roots are...
Aug14-11 07:56 AM
Sumedh
2 896
In elementary school or high school, we often use stuff that has never actually been proven (in that class). For...
Aug14-11 03:16 AM
DarkDrag0nite
86 8,131
According to Wolfram Alpha, if sin x =cosh x then x=-(\frac{3\pi}{4}+\frac{3i\pi}{4}) But how do you derive this? ...
Aug13-11 10:24 PM
dimension10
12 2,743
Each generation of mathematics (dunno how long a generation is) have great mathematicians. Last generation was...
Aug13-11 02:46 PM
saim_
2 1,009
Hi all, I have a question regarding least-squares, and I'm certain I can't be the first one to encounter it, but...
Aug13-11 12:16 PM
Stephen Tashi
3 1,993
Hello, Does anyone know if the pseudo code listed here ...
Aug12-11 11:53 PM
Replogle
0 1,704
Hi guys, it's 3 AM so don't judge me. I'm doing some accounting work with my student loans and I want you to confirm...
Aug12-11 07:56 AM
HallsofIvy
1 1,085
Hi, If we have a random variable in the form: ...
Aug11-11 10:17 PM
S_David
0 762
I'm applying for a tutoring position at my school. I already passed the pre-interview and took the test (basic...
Aug11-11 05:14 PM
Dickfore
16 2,071
Hello, I want to calculate the conditioning of a matrix, therefore I use the cond() commando in Matlab. A problem...
Aug11-11 12:32 PM
uart
2 2,771
I study nanoparticles. Basically, they are prepared by being "etched away" from larger chunks of material. I need to...
Aug11-11 08:26 AM
katkak
4 1,183
I want to learn better mathematic olympiad(I am Grade 10), but I don't know how to start. So I hope someone could give...
Aug11-11 05:58 AM
henry407
0 614
Hi all, I have a question and hope to solve. problem terms : 1- there are K holes. 2- there are N group of Pigeon....
Aug11-11 02:21 AM
JaneGardner
7 2,332
Hi everybody, im new here and like physics very much I came across a post here about the proof for:...
Aug10-11 11:47 AM
johnsmi
9 10,001
Hi everyone, Can someone please tell me is there any mathematical equation/formula on ploting a curve with given...
Aug10-11 08:42 AM
mikeph
7 4,953
Source: http://en.wikipedia.org/wiki/Ternary_numeral_system The last sentence in the quote from the Wikipedia has...
Aug10-11 05:51 AM
daveyp225
5 1,854
Hi, I have a line L stretching from point A to ponit B. The startpoint A has the coordinates x1, y1 and endpoint B...
Aug10-11 05:44 AM
daveyp225
1 2,657
Hi, what are some good textbooks dedicated to this subject? I have a short time to learn everything about this...
Aug10-11 01:46 AM
JJacquelin
4 1,067
Supposedly this proof answers my question. 8 / 16 = .5 8 / 8 = 1 8 / 4 = 2 8 / 2 = 4 8 / 1 = 8 8 / .5 = 16 8...
Aug10-11 01:37 AM
jimgavagan
2 1,752
I need a simple methods to numerical differentiation. I'm currently working on an image processing to detect edges....
Aug10-11 01:30 AM
sagar474
0 714
What is division? 12 ones split up into 3 things is 4 ones (per thing.) 1 one split up into 100 things is 1/100 ones...
Aug10-11 12:24 AM
jimgavagan
6 2,190
A natural integer N can be written as x mod p, for instance: N... 1 2 3 4 5 6 7 8 9 10 11 12 p=2 1 2 1 2 1 2 1 2...
Aug9-11 11:49 PM
bpet
1 968
Hi guys. I'm a highschool drop-out. I went back and got a General Education Development degree. I'm also doing grade...
Aug9-11 11:43 PM
onnyctip
2 1,076
I've always been a creative person since I was little. I really wasn't noticed for my potential for maths at all...
Aug9-11 10:44 PM
Dr. Seafood
1 791
For example, I just heard that ATMs are possible thanks to the development of elliptic curve theory. Also that...
Aug9-11 09:19 PM
DaveC426913
5 4,239
For me it would have to be the set of complex numbers. What's yours?
Aug9-11 08:24 PM
disregardthat
34 3,565
Hi, I don't know about other people here but I work best when I have something to hold me to what I was trying to...
Aug9-11 06:25 PM
mrwall-e
13 1,681
Hi there! I have been reading Apostol's "Calculus: Volume 1" and have been trying to prove a few theorems using...
Aug9-11 12:53 PM
galois26
8 1,822

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