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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.
Aug31-14 03:38 AM Yashbhatt 
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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 39,009
I do really well if I have one form of arithmetic like addition, or subtraction. But as we all know math doesn't work...
Jun8-13 03:27 AM
34 4,017
Can anybody recommend a good site to bone up on differentiating and integrating ln and e functions?
Apr7-08 08:06 PM
2 4,016
What is the meaning of a pathological function?
Jan17-07 01:03 PM
12 4,015
Hi,I m trying to find out,what is imaginary unit/number.How to imagine it.I was reading many articles and...
Jul23-12 11:46 AM
Number Nine
36 4,014
Hey, Not sure if this is in the right place, move if necessary. So, I know about SUVATs, and non-constant...
Jul6-09 01:23 AM
16 4,012
one (and perhaps the only) example is:2^4=4^2 what more examples are there?
Jul21-03 02:05 PM
15 4,011
x^4+y^4+z^4+(4x^2)*(y^2)*(z^2)-34=0 ive tried all sorts of things factoring, algebraic manipulation ect. but i dont...
Aug21-09 03:29 PM
Storm Butler
7 4,009
Hello everyone, I do not understand how:: e raised to ln of x = x ? this notation might make more sense:: e^ln...
May4-07 11:07 AM
11 4,008
hi all, i was studying modulus when i came across this mod(xy) = modx mod y we consider 3 cases whereby both...
Jun30-08 02:23 PM
5 4,008
Let's say you know x1, x2 and y1=y(x1), y2=y(x2) and gradients dy/dx at x1 and dy/dx at x2. That's 4 knowns. ...
Apr28-07 05:32 AM
1 4,006
Hi everyone, I'm designing a particular algorithm and part of it requires to check if a given Matrix is invertible...
Jun30-10 06:02 AM
Gib Z
3 4,001
Hi, Very general question, I never really covered this. Say I have ten data points in 2D space and I need to...
Sep28-10 01:46 PM
14 4,001
Hi all, ok there are 3 piles containing objects; Pile A, Pile B and Pile C. Let the Nim-sum of all 3 piles be...
Dec26-06 11:34 PM
3 3,999
My differential geomtry professor once told me that with all his 30+ years experience in research in differential...
Feb25-07 12:58 PM
30 3,999
Hi everyone. I tried solving these questions but cant seems to get anywhere. I am not used to questions like these...
May31-04 01:58 PM
4 3,994
I have a door lever which has a 90 deg. bend. I need to calculate the length that this lever would have to be if it...
Oct26-09 03:49 PM
3 3,993
I'm aiming to calculate ln(x) numerically. I'm using the following procedure for this: 1) If x is greater or equal to...
Jan26-11 04:40 PM
12 3,993
Hello, I got pointed to this forum by OfficeShreder. I have a question I've been puzzling myself over for a while. ...
Nov21-06 12:30 AM
8 3,992
I'm sure I've seen it...I've searched under "typing exponents" , "how exponents" and "superscript" and can't come up...
Nov10-03 10:17 AM
Guybrush Threepwood
3 3,991
here there are Exercises on Partial Derivatives:...
Aug8-03 01:53 AM
2 3,987
I'm not really sure which forum this is appropriate for, so I'll put it here and hope someone can help! I can't find...
Jan23-06 03:24 AM
0 3,986
I love doing proofs, but hate doing computational questions. If I become very good with proofs but remain just so-so...
Feb1-11 06:11 PM
21 3,986
A topological space is a set X together with T, a collection of subsets of X, satisfying the following axioms: 1.The...
May25-09 12:05 AM
9 3,986
What happens if you have to take the arccos of a number greater than 1 or less than -1. I know from a right...
Sep5-11 03:12 PM
7 3,986
Hello, my problem is: Let Q(t) = 8(0.87)^t Find the annual and daily growth rate. Can anyone tell me how...
Oct29-04 01:36 AM
5 3,983
if sinh(y)=x, then, show that cosh(y)=sqrt(1+x^2) I know how to prove but i have difficult in choosing the signs. ...
Sep25-07 11:43 PM
8 3,983
What's the general rule for constructing such graphs? I mean actually drawing it on paper.
Jun16-09 10:23 AM
1 3,983
Find the relative extrema of f(x)=|3x-x^2|. Normally you solve f'(x)=0 to find the critical points, in that case we...
Jan24-10 06:18 AM
4 3,982
Hi all ! I came across an article (link: The...
Jul15-04 12:01 PM
33 3,980
How one can find the solution to x^y+y^x=100 Where x,y belong to integers?
Jan9-04 01:19 AM
5 3,976
One guy advanced and asked me the question with an intention to judge my skill - " What is the value of x , if x2=4 "...
Aug3-11 12:16 PM
24 3,975
Hello, I need your help please? It might seem obvious to you but I can't seem to get my head around how to solve...
Aug13-03 04:33 PM
11 3,974
definitely you can assume the premis and arrive at a truth and then consider your theorem truth only if the way from...
Jun27-08 11:40 PM
54 3,974
i noticed that if i integrate 2 \pi r i get \int 2 \pi r dr=\pi r^2 i figured its because the area of a circle...
May5-05 10:37 AM
15 3,972
I have the function: x(\phi) = \left~\textrm{mod}~72~000 and I'm wondering how to invert it in order to get ...
Jun12-11 10:11 PM
33 3,972
Hi, how can I work out the relationship between percentages of a whole, when one of those percentages changes? I'm...
Sep8-10 10:19 AM
27 3,970
Is this method good for analyzing a pulse? Why is the averaging of the spectra good for noise cleaning? What's the...
Jun10-10 04:17 AM
4 3,969
As we have seen some mathematical sign lately in this group, because I put you in the drawing of the general sign of...
Nov6-07 03:42 AM
37 3,967
I know that Euler is pronounced Oiler, and Galois is Gale-Wah. Can anyone try to write phonetically Stieltjes,...
Dec11-08 02:48 PM
3 3,966
hi, I'm stuck and I cant seem to find a simple solution to questions regarding how to find the centre of mass of a...
May26-10 12:07 PM
2 3,964

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