Please post any and all homework or other textbookstyle problems in one of the Homework & Coursework Questions...

Feb2313 09:23 AM
micromass

1 
33,267 
Let M=Men, D=Days, H=Hours, η=efficiency, W=Work
##MDH \propto W##
##MDH = kW##
## \frac {MDH}{W} = k##
...

T 12:44 AM
22990atinesh

19 
540 
Hello all
I was hoping someone could help me with a geometry problem.
Firstly this is not a homework question –...

Y 04:17 PM
phinds

12 
172 
I think the classical Poissonian process is where you have something, which in a time dt has a probability ωdt. Then...

Apr2314 07:19 PM
eigenperson

1 
102 
Hi
I have two sets of data, y as a function of x, for two different experiments.
Y is the dependant variable, an...

Apr2314 04:50 PM
mfb

9 
194 
Thanks in advance!
I have problem that is causing me a headache to no end. In a cylinder, if one knows the total...

Apr2314 12:20 PM
SteamKing

6 
127 
Thanks in advance:
here is my equation:
Area = \pir^{2}  r^{2}(arcos((rx)/r))+(rx))*\sqrt{2*r*xx^{2}}

Apr2314 10:49 AM
ModusPwnd

2 
146 
Let there be a triangle with coordinates A(2,2) , B(5,2) and C(5,4)
I have learned two ways to shear an object(xaxis...

Apr2314 09:15 AM
Mark44

4 
156 
I found in the wiki a definition for the max of 2 numbers:...

Apr2314 05:45 AM
jbriggs444

6 
181 
The term "harmonic" arise in the math in several subjects, harmonic series, harmonic function, analysis harmonic, mean...

Apr2314 04:27 AM
Simon Bridge

1 
142 
If exist a function called absolute that ensures that the result have always the posite sign, so, exist some function...

Apr2314 03:15 AM
homeomorphic

1 
118 
Just curious, but the use of matrices isn't readily obvious to me, and I was wondering what a typical use would be?

Apr2314 02:20 AM
homeomorphic

4 
173 
I apologize if this is the wrong section
This is an integral written with the first 7 digits of pi, reversed, I...

Apr2214 11:56 PM
Mark44

2 
132 
Why do I feel like I am about to be fed to a pack of hungry wolves? I take it as a foregone conclusion that anyone who...

Apr2214 06:20 PM
csullens

14 
532 
Conic sections are formed when a plane cuts a double cone, i.e. two cones placed tip to tip along the same axis. A...

Apr2214 04:28 PM
micromass

3 
124 
What is the maximum number of roots of a multivariate polynomial over a field? Is there a multivariate version of the...

Apr2114 09:48 PM
Dragonfall

2 
176 
I have a Gaussian distribution about t, say, N(t; μ, σ), and a a Dirac Delta Function δ(t).
Then how can I compute:...

Apr2114 06:31 PM
jasonRF

4 
214 
i.e., does the set of functions of the form,
\{ x^{\frac{n}{m}}\}_{n=0}^{\infty} for some fixed m produce a...

Apr2114 02:19 PM
disregardthat

1 
150 
Cross product is used to find the perpendicular vector of two vectors. If there is any two vectors in a plane then...

Apr2114 10:13 AM
dauto

4 
233 
Can anyone give me a good definition of Euler's number and its significance. I see it everywhere, it's prolific in...

Apr2114 09:16 AM
Curious3141

7 
374 
the sequence:
1,1,2,1,1,2,1,1,3,1,1,2,1,1,2,1,1,3,1,1,2,1,1,2,1,1,4,...

Apr2114 05:55 AM
micromass

2 
169 
A periodic function is one that ##f(\theta) = f(\theta + nT)##, by definition. However, the argument ##\theta## can be...

Apr2014 08:33 PM
gopher_p

3 
177 
I'm finding it hard to find the solutions to this cubic equation:
1/2 x^3  2.025647693*10^14 x^2 +...

Apr2014 08:11 PM
Chestermiller

3 
392 
Dear everyone,
I would like to know which one of the meter or the mile is used to send objects in the space please?...

Apr2014 03:56 PM
Emilie_AO

2 
174 
I'm writing a piece of code and I want to simplify a bunch of if/else statements.
I need...

Apr2014 02:09 PM
FactChecker

21 
471 
Is possible to rewrite the quadratic, cubic and quartic determinant in terms of matrices and matrix operations (trace...

Apr2014 12:37 AM
micromass

4 
333 
Why variables (RHS) in directly proportionality are always multiplied.
Suppose the newton 2nd law
...

Apr1914 07:34 PM
chogg

17 
316 
Commonly I see ##\sin(\omega t + k x)## I ask myself, if ωt is equal to θ thus kx is equal to what??
Also, the...

Apr1814 11:02 PM
Jhenrique

10 
346 
Whenever I'm on math class I've noticed that often professors, and in my online class the videos and examples all seem...

Apr1814 03:27 PM
micromass

5 
213 
Given Cartesian (x,y,z), Spherical (r,\theta,\phi) and parabolic (\varepsilon , \eta , \phi ), where
\varepsilon =...

Apr1814 04:22 AM
bolbteppa

0 
181 
Hello.
So, I am building a camera and have ran into a problem that I feel could be solved with a semisimple...

Apr1714 12:59 PM
Zippie

6 
270 
I have been wondering:
Given an arbitrary geometric shape is there a sequence of tests I can perform on individual...

Apr1714 11:35 AM
disregardthat

7 
1,018 
In my previous two math classes I'd get the answer wrong if I put the number first then the variable as my answer. Now...

Apr1614 11:48 PM
Tyrion101

18 
460 
Hello,
this isn't a homework problem, so i'm hoping it's okay to post here.
I would like to know the correct way...

Apr1614 09:02 AM
Mark44

5 
273 
Guys, I may need your help. There is a question saying that how to solve the cubic function in general form, which...

Apr1614 05:56 AM
disregardthat

4 
327 
I was studying the dot product, and it says that (a.b).c makes no sense.
so if you do (a.b) can = to β
and then is...

Apr1614 05:46 AM
HomogenousCow

8 
320 
Who may help me with this question? Thanks. Log10(x)^log10(log10X)=10000

Apr1514 07:43 PM
Mark44

3 
248 
This thread does justice to a question put forth online several times and, as far as I can tell is only answered in...

Apr1514 10:44 AM
DavidHume

8 
282 
If ##y=x^4##, so x is equal to ##\pm \sqrt{y}## or x is equal to ##\pm \sqrt{\pm \sqrt{y}}## ?
Well, I think that x...

Apr1514 09:54 AM
Mark44

5 
292 
If I want to discuss Black–Scholes formula, where should I post?

Apr1414 11:52 PM
AMenendez

1 
248 
Ok! So I know Newton and Leibniz invented Calculus independently and today a major part of maths requires calculus....

Apr1414 12:54 PM
Giant

16 
750 