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

Feb2313 09:25 AM
micromass

1 
32,450 
Hi,
I'm an economics graduate student doing some work on a nested logit model.
I am trying to generate random...

Jul2213 07:52 AM
Jeffack

4 
474 
My goal: To show the dimension of space L equals the length of any maximal flag of L;
Is the following valid?
My...

Jul2113 09:09 PM
CubicFlunky77

3 
570 
Hi everyone,
I hope your summer is going well. My name is Quinn and I am currently a junior CS and math major at...

Jul2113 02:02 AM
JCVD

5 
623 
Hello. Say I have a given noise spectral density and I want to plot the random noise signal arising from this spectral...

Jul2013 08:00 AM
jasonRF

4 
548 
I am currently working on a prediction problem using generalized linear model, My goal is to get the prediction...

Jul2013 02:27 AM
chiro

5 
957 
If X is a continuous random variable and E(X) exists, does the limit as x→∞ of x = 0?
I encountered this, but so...

Jul1713 04:39 PM
LoadedAnvils

5 
479 
Never mind.

Jul1613 06:54 AM
Normalization

0 
481 
I've been trying to prove the following, without much success.
Let ##B## and ##C## be nonempty finite subsets of an...

Jul1513 02:07 PM
D H

7 
646 
Hello,
I have just started learning these things, would really appreciate any help on this.
There are 4 nodes in a...

Jul1513 12:07 PM
verty

1 
453 
Good evening
Im starting to learn quantum mechanics from Griffith's book however Im having problems when dealing...

Jul1513 02:10 AM
Jimmy84

11 
760 
Link to theorem: http://en.wikipedia.org/wiki/Law_of_the_unconscious_statistician
Suppose Y is a discrete random...

Jul1313 05:06 PM
LoadedAnvils

7 
1,280 
Hi everyone,
I've been bumping on this problem for a while and wondered if any of you had any clue on how to...

Jul1313 09:42 AM
verty

14 
1,644 
Hi, I have the following problem.
Consider an agestructured population growing according to a Leslie matrix....

Jul1213 09:07 AM
Stephen Tashi

1 
458 
I should preface this question by saying that I am a computer science major.
A logic question was posed in an IT...

Jul1213 09:02 AM
Stephen Tashi

6 
718 
Essentially, I have to show that where {e_1,...,e_n} forms the basis of L, no family of vectors {e'_1 ,..., e'_m} with...

Jul1213 08:58 AM
Stephen Tashi

2 
415 
This is the first 'problem' in my Linear Algebra/Geometry text book. I just need to know if I am doing it correctly....

Jul1113 06:34 PM
CubicFlunky77

2 
464 
Does anyone know of any REALLY good derivations of the grand canonical partition function(T,V,μ) from the hamiltonian....

Jul1113 05:16 PM
rppearso

0 
437 
Hello,
I have a doubt about the distribution of random variables that maximize the differential entropy in a set of...

Jul1113 12:32 PM
ferreat

2 
524 
Please take a look at this proof:
http://s12.postimg.org/qa24fgbq5/proof.jpg
The thing I do not get is how they...

Jul1013 02:43 PM
verty

5 
780 
"All engineers have practical skills or are good at mathematics"
to write down the converse, inverse and...

Jul1013 03:17 AM
micromass

3 
674 
Consider these propositions,
P=It is raining, and Q=There are clouds in the sky
R=giving a cookie by me, and...

Jul1013 01:00 AM
Stephen Tashi

1 
524 
I have a question on (I think?) Bayesian statistics.
Consider the following situation:
P is a class of...

Jul913 01:27 PM
economicsnerd

8 
783 
Hey all, so my university's game theory course never runs due to lack of students signing up for it, so I'm taking it...

Jul913 12:08 PM
economicsnerd

1 
593 
you can list and match up all rational numbers with irrational numbers this way..
lets say i have an irrational...

Jul913 03:34 AM
micromass

17 
2,216 
I read in Mirman's book on group theory that SO(2) is the only simple group that is not semisimple. Can anyone explain...

Jul713 11:23 PM
Stephen Tashi

1 
474 
Hi all. I've been thinking about this question a lot for the past few days and it seems to me that I'm committing a...

Jul713 08:24 PM
Stephen Tashi

24 
1,800 
I don't understand it.
A has n elements, and B has m elements. Give the exact maximum/minimum of
1) A \bigcup B...

Jul713 08:19 AM
HallsofIvy

5 
693 
I have a onedimensional set of data which I have attached an image of. This data is an intensity z, as a function of...

Jul613 06:59 AM
chiro

6 
605 
Need help propagating the uncertainty of Es = Ex ×(x+xo/xs+xo) . I understand all of the rules and can do it for a...

Jul513 08:53 PM
chiro

4 
471 
I am confused I understand that the power set has ##2^{\mathcal{A}}## members, but they write it as...

Jul513 06:08 AM
Tenshou

8 
868 
Does anyone know where to get the letters(English translation) between Cantor and Dedekind during the development of...

Jul413 02:20 PM
lugita15

2 
582 
Hello, I have some questions about the truth tables for impliocation and equivalence.
for implication we have:
p...

Jul313 04:49 PM
MLP

4 
726 
Hi
Please advice me a good book on mathematical statistics.I want it to be oriented in math students or engineering...

Jul213 07:43 PM
theoristo

1 
678 
Hi guys,
It's been 20 years since I left college so I have forgotten how to calculate probability.
It is...

Jul213 11:42 AM
Logger

12 
894 
I have the following silly problem I don't know how to get round:cry:
I have a set of datapoints, each point has...

Jul213 09:59 AM
f95toli

1 
391 
Hi,
I'm having trouble understanding why the follow composition table for the set \left\{ a, b, c, d \right\} with...

Jul113 05:43 PM
coderot

5 
513 
I don't know if this is the proper thing to call it, but I haven't used any mathematical terminology in a while so I...

Jul113 04:07 AM
Tenshou

11 
731 
Just finished my math studies.
I have been studying mostly statistics and have some experience in R language.
Need...

Jun2913 08:04 PM
MarneMath

1 
596 
I know that f(A∩B) is not equal to f(A) ∩ f(B) but i don't know that where am i wrong in the following proof....:( can...

Jun2913 05:49 PM
woundedtiger4

2 
512 
So I've been banging my head on this problem for a few days and haven't gotten very far, hoping someone has some...

Jun2913 11:07 AM
mfb

1 
505 