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• Today, 06:14
Can you give us any idea where the series comes from? Technically the next term in the series could be argued to be anything. -Dan
8 replies | 105 view(s)
• April 22nd, 2018, 22:40
topsquark replied to a thread Special Relativity in Physics
So what we have here is \Delta t' = \frac{\Delta t}{\sqrt{1 - \frac{v^2}{c^2}}} where \Delta t' is measured by the observer's clock and \Delta t...
11 replies | 128 view(s)
• April 22nd, 2018, 21:07
Unsolved Challenge
Integral of sine in Challenge Questions and Puzzles
Where are you getting these monstrosities from? -Dan
3 replies | 65 view(s)
• April 22nd, 2018, 20:27
topsquark replied to a thread Special Relativity in Physics
There is a wrinkle here. If we are talking about an observer on Earth then as tkhunny points out there must be some kind of misprint... It can't be...
11 replies | 128 view(s)
• April 22nd, 2018, 10:17
MarkFL replied to a thread Olinguito in Introductions
Hello, and welcome to MHB! (Wave)
8 replies | 102 view(s)
• April 21st, 2018, 16:53
topsquark replied to a thread Diffraction in Physics
Yup. Double check the angle on the |n| = 1 interpretation I gave you. I might have screwed up left and right. But in the long run, no, it...
4 replies | 70 view(s)
• April 21st, 2018, 14:15
There was no inconvenience, except to you trying to post and to those trying to read the thread. It was bad coding on my part, done before I knew the...
19 replies | 514 view(s)
• April 21st, 2018, 13:33
I never knew that. Thanks, I'll have to keep that one in my back pocket. First driving on the wrong side of the road and now this... -Dan
9 replies | 140 view(s)
• April 21st, 2018, 13:30
topsquark replied to a thread Diffraction in Physics
More or less we can take the sign of sin( \theta ) to be "attached" to the n. A positive n describes the nth minima to the right of the central...
4 replies | 70 view(s)
• April 21st, 2018, 13:27
In the process of developing certain number systems I have seen many versions of the notation (a, b). For example: 1) Given any two integers a,...
5 replies | 111 view(s)
• April 20th, 2018, 22:16
Update - Version 1.3.1: Bug fix for usernames with special characters.
2 replies | 224 view(s)
• April 20th, 2018, 19:16
I have added code to that external script so a single quote in a username won't throw an error, and I edited the post so that only the username is...
19 replies | 514 view(s)
• April 20th, 2018, 12:00
Here is this week's POTW: A small bug is placed between two blocks of masses $m_1$ and $m_2$ ($m_1>m_2$) on a frictionless table. A horizontal...
0 replies | 38 view(s)
• April 20th, 2018, 11:59
No one answered this week's problem, and my solution is as follows: A formula for power $P$ we can apply here is: P=\frac{1}{2}\mu\omega^2A^2v...
1 replies | 75 view(s)
• April 20th, 2018, 02:40
As with your last post most of these are plug-n-chug. Do you even know the basics definitions? How do you define the determinant of a 2 x 2 matrix?...
1 replies | 61 view(s)
• April 19th, 2018, 18:27
topsquark replied to a thread Sequences and Series in Analysis
Do you mean to say you can't do 2 and 4?? What are the possible values for n? Do you know what an nth partial sum is? Hint: 3 is a geometric...
2 replies | 76 view(s)
• April 19th, 2018, 16:23
Okay, why isn't the number four? Is this diagram of his not flat in the plane? I messed around with the 4 color theorem as a kid and I heard it was...
2 replies | 61 view(s)
• April 16th, 2018, 07:33
The "other Forum" had a simple question that never got answered as far as I know. What the (Swearing) is "SAGE?" -Dan
7 replies | 119 view(s)
• April 15th, 2018, 20:01
Awesome work, as always Chris! (Yes) Using your post, where the base case and induction statement have been given, then the induction step would...
6 replies | 133 view(s)
• April 15th, 2018, 12:02
Here are the choices: A.) \frac{1}{2} B.) \frac{1}{2}-\frac{2^{2006}}{3^{2^{2006}}-1} C.) \frac{1}{2}-\frac{2^{2005}}{3^{2^{2005}}-1} D.)...
6 replies | 133 view(s)
• April 14th, 2018, 10:56
The actual sum he's given is: S=\sum_{k=0}^{2006}\left(\frac{2^k}{3^{2^k}+1}\right) And he's given several choices for the result. I was hoping...
6 replies | 133 view(s)
• April 14th, 2018, 10:10
Hello MHB! (Wave) A young man in high school I know has been essentially tasked with finding the following partial sum: ...
6 replies | 133 view(s)
• April 12th, 2018, 11:47
MarkFL replied to a thread Hello from Pan in Introductions
Hello, and welcome to MHB panpan! (Wave)
6 replies | 94 view(s)
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1. Many thanks for your wonderful help!
2. Hey Prove It! Regarding this post, I think you mean $2-e$ is definitely incorrect, right? Since the function is positive in the given interval. Just wanted to give a heads-up.

Best wishes,

Fantini.
3. Hey , I noticed that you like solving integration problems. I think that your solutions are excellent and neat. Keep going !
4. Hi Prove It! I just want you to know that I split your thread Miko's question via email into two posts, so that it won't be shown up in the unanswered thread list. When bringing questions from other sites, please make sure you post the question in one post and the answer in another so that it wouldn't be shown up as an unanswered thread.
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