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

Feb2313 09:25 AM
micromass

1 
31,956 
"All engineers have practical skills or are good at mathematics"
to write down the converse, inverse and...

Jul1013 03:17 AM
micromass

3 
651 
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 
514 
I have a question on (I think?) Bayesian statistics.
Consider the following situation:
P is a class of...

Jul913 01:27 PM
economicsnerd

8 
748 
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 
565 
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 
2,120 
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 
464 
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 
1,720 
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 
670 
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 
583 
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 
462 
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 
840 
Does anyone know where to get the letters(English translation) between Cantor and Dedekind during the development of...

Jul413 02:20 PM
lugita15

2 
567 
Hello, I have some questions about the truth tables for impliocation and equivalence.
for implication we have:
p...

Jul313 04:49 PM
MLP

4 
689 
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 
650 
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 
877 
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 
371 
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 
503 
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 
713 
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 
579 
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 
497 
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 
494 
If one has the mean and standard deviation of a population, is it possible to calculate (or estimate) the mean and...

Jun2813 05:40 PM
Stephen Tashi

3 
675 
Hello,
I've been working on some questions from Rice's Mathematical Statistics and Data Analysis and I'm not sure...

Jun2813 12:14 AM
Catchfire

2 
566 
This paper is still subject to being edited and I am an amatuer mathematician, so there may be some mistakes, typos,...

Jun2713 10:10 PM
krausebj0

24 
708 
Is there a theorem which says that if certain natural number sequences exist, then some large cardinals exist. Can...

Jun2713 09:19 PM
alephaleph

1 
698 
Thermodynamics states that a system cannot become more complex without some sort of input (which would make it an open...

Jun2713 12:50 AM
acesuv

3 
480 
The question is this:
"An urn is filled with 8 green balls, 2 red balls, and 6 orange balls. Three balls are...

Jun2513 11:50 PM
Bacle2

3 
834 
Are both same or different? Can someone give me some example to understand?
Thanks in advance

Jun2513 11:46 AM
MarneMath

1 
453 
Hello everybody.
For the past couple of months I've been trying to study abstract algebra by myself. I got some...

Jun2513 07:31 AM
MarneMath

13 
1,603 
Now, assume I have a white noise, n(t)\tilde \ N(0,1), i.e gaussian with zero mean and variance 1, and it goes...

Jun2213 03:18 AM
MathematicalPhysicist

0 
560 
derive the MGF hence find their mean and variance
1 weibull distribution
2 pareto distribution
3 lognormal...

Jun2113 08:51 AM
HallsofIvy

1 
716 
Hi I am not sure what method to use when analysing the difference in values between physical measured data and...

Jun2113 08:33 AM
nixi

2 
680 
My current level of understanding of error/data analysis and statistics is based on the material I covered from...

Jun2013 11:09 PM
chiro

6 
803 
Good afternoon,
I've come here to hopefully resolve an issue that cropped up in a debate with a friend.
We were...

Jun2013 11:03 PM
chiro

2 
843 
A(B\bigcapC)=(AB)\bigcup(AC)
If AB={xlx\inA and x\notinB}
AC={xlx\inA and x\notinC}
then...

Jun1913 04:04 PM
mathman

4 
1,128 
Hi,
I need some directions to target a problem that is bothering me quite a lot, even some links or small...

Jun1913 02:17 PM
Stephen Tashi

5 
871 
Hi,
I have a potential job opportunity where I will be given horse racing data i.e. average speed, max speed,...

Jun1913 12:26 PM
great_sushi

6 
758 
Hi all,
I have a question about measure theory:
Suppose we have probability space (\mathbb{R}^d,\mathcal{B}^d,\mu)...

Jun1813 05:00 PM
hwangii

0 
489 
Hi I am not sure where to post this question but I am trying to simplify this expression:
r*c'w+c (As in R AND NOT...

Jun1813 12:46 PM
MisterX

4 
654 
I have a set of data that was recorded from an engine that we are testing. We've noticed lately that a particular...

Jun1713 12:52 PM
Raddy13

3 
663 