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General Math

- Math topics not applicable to the categories below. High-school Math
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Common math questions, quality answers.
Jul24-14 10:02 AM Greg Bernhardt 
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Test your skills. Math challenges will be posted at least once a week. Suggestions for problems are welcomed.
Aug5-14 02:05 PM fredoniahead 
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All math courses. PDFs, tutorials and web links.
Sep15-14 01:06 PM phion 
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Jan16-12 Greg Bernhardt
Please post any and all homework or other textbook-style problems in one of the Homework & Coursework Questions...
Feb23-13 09:23 AM
1 39,255
Hi P*e^(rt) = Accumulated amount of money Principal e logaritm rate time is for continous compounding of...
Jun20-09 03:51 PM
1 26,266
Hello all, I am new to this forum, and am hoping that I might find some assistance from fellow mathematicians. I...
May18-10 10:51 PM
7 26,143
I'm wondering why we teach algebra students that they MUST rationalize the denominator of a fraction containing a...
Apr8-11 02:16 PM
20 26,028
Once again my professor asked us to ask 6 people the following question and see how they answer it so if you could...
Feb20-10 02:18 AM
robert Ihnot
16 25,915
What is the formula for calculating average power? Pavg=?
Sep16-04 04:55 AM
2 25,878
Hello there my fellow complex number comrades, I was just wondering, what are the key differences between a...
Aug12-09 02:54 PM
28 25,854
At exactly 5 p.m., Alex rode off from Asteroid. One hour later, Jessica rode off from Asteroid in the opposite...
Dec10-07 07:52 AM
7 25,755
a series such as :- ∑ from n = 1 ,until m for n can be found with the law of the sum of arithmetical series:-...
Feb19-06 10:29 AM
robert Ihnot
3 25,669
Hello there I am trying to figure out this but am having some difficulty. Your help would be much appreciated. I...
Apr13-09 03:54 PM
18 25,502
In my teacher's office hours, I expressed some disappointment that she was going to skip one of the "application"...
Mar15-10 01:54 PM
George Jones
80 25,421
and, consequently, infinitely many. I am new to proofs so could you please check if this proof is correct? Let x...
Jan21-12 07:55 AM
26 25,337
Does the equation a3 + b3 = c3 (where a, b and c are constants) have any general geometrical significance?
Sep4-12 01:45 PM
54 25,282
Who is pi derived, and what exactly is pi.
Dec27-08 07:54 AM
14 25,008
hi peeps. just a quick one. (a) how would you go around working out the fourier for exponential functions.. simply...
Dec9-11 12:21 PM
4 24,900
Ok, I know this seems very obvious to most people, but I have a problem understanding it. First of all: I have not...
Nov19-08 04:55 AM
69 24,873
1 / infinity = ? is there anything that we can reduce this to? (i doubt there is, but you never know) well,...
Nov9-09 10:16 PM
23 24,785
Hi, would anyone be able to explain how to evaluate a function using orthogonality (i.e. using orthogonality to...
Jun12-09 10:49 PM
Bob S
3 24,675
Does anyone know how to derive the spherical unit vectors in the cartesian basis? Or a good link that might show how...
May25-11 03:53 PM
4 24,464
Has anyone read their Sunday comics yet today? Here are the first three frames of Dilbert: 1. Boss: Your project...
Jun18-06 04:22 PM
7 24,411
Hi! I'd a look at complex numbers and can't understand how they can be applied to "the real world". Can anyone give me...
Nov3-09 09:46 AM
7 24,405
I am trying to find the best algorithm that will find the prime numbers just for fun.. I am not a programmer so...
Sep23-08 12:52 PM
20 24,398
Hi there guys. My first post here. I heard this forum was really helpful so i've signed up lol.I'm trying to get to...
Aug11-07 09:54 PM
12 24,385
In the course I'm taking, we are already done with Lebesgue integration on R, and while we have proven that for...
Dec1-07 02:53 AM
39 24,373
Heya's how would one go about spanning a vector say 'u' onto a plane spanned by vectors v1 and v2. I have a...
Oct19-10 11:11 PM
4 24,243
I want to compile a list of every branch of mathematics, for my studies. This is what I got from wiki: 1. Basic...
Jan23-11 07:19 PM
3 24,003
I have a TI graphing calculator and I'd like to graph the following equation,... x^3+y^3-3xy = 0 I'm not sure...
Dec2-04 07:27 PM
5 23,971
I hope you could help me on this. Is there anyone can tell how to calculate azimuth and distance of two points on...
Dec12-07 12:31 PM
5 23,790
Have a question about usage of mathematical jargon... what are the differences between usage of "so that" and "such...
May31-09 08:48 PM
8 23,597
How do we come to 4.pi.r^2?
Aug16-07 02:33 PM
7 23,421
How do you know when to use ≡ or =? I've seen the the formula for density written with that = and ≡. Also, whilst...
Apr9-12 08:39 PM
21 23,389
hi, is there any way to find the cube roots of a complex number WITHOUT converting it into the polar form? i am...
Nov4-06 11:52 PM
13 23,317
Hi. If the radius of a circle is known and it's also known that its center is at X:0, Y:0, how can the points that...
Apr23-09 07:21 PM
18 23,291
When trying to determine whether a number is prime or not, the following algorithm is often used: Test all numbers up...
Aug1-04 11:19 AM
3 23,216
I know that shape function is a function that will give the displacements inside an element if its displacement at all...
Jun3-05 07:39 AM
1 23,116
What's the difference b/w surface area and total area? For example, the surface area of a cylinder is A = 2 pi rh...
Oct14-03 07:38 PM
12 23,095
Hi guyz, I have a small question, In spherical coordinates if we define 2 vectors such as magnetization of a shell...
Mar28-07 12:35 PM
7 22,986
In a given right-angled triangle, the length of the hypotenuse is 10 and the length of one of the heights is 6. What...
Feb4-04 12:50 AM
35 22,888
The centroid of a semicircle is noted at being (4r)/(3 pi) - However,...
Jul20-09 02:26 AM
1 22,783
I've tried looking through my book to see how to do these, but I just can't find it. Any help would be appreciated: ...
Jan3-05 05:19 PM
4 22,600
2x4 is the same as 4+4 right? they both equal 8 right? by what logic does -2 x -4 = 8. I know its a rule. but why?!?!...
Jun9-07 06:47 PM
26 22,459

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