Tab Content
• Yesterday, 22:22
Here's a link to a Desmos slope field for this ODE: https://www.desmos.com/calculator/my0rwuxl5x
3 replies | 71 view(s)
• Yesterday, 15:22
You are right. Since $\arctan(-x)=-\arctan(x)$, it is easy to see that $|x_n|=y_n$ for all $n$. You are also right that $y_n$ is decreasing....
1 replies | 61 view(s)
• Yesterday, 14:58
Evgeny.Makarov replied to a thread Jokes in Chat Room
I would say that the distance between opposite vertices in a rectangle is the diameter. This terminology is used in graph theory. Professor: What...
216 replies | 33269 view(s)
• Yesterday, 00:37
When you determine your integrating factor, you need only determine up to but not including the constant of integration: ...
3 replies | 71 view(s)
• February 20th, 2019, 03:31
Hi Tan Tom, welcome to MHB! ;) If I understand correctly, you have $$(1-2j)e^{j\frac\pi 2 n} +a_3 e ^ {-(j\frac\pi 2n)} + 3 + (-1)^{n+1}=sum$$...
1 replies | 58 view(s)
• February 19th, 2019, 20:32
There are some typos/issues with your work. See if you can spot them...:)
4 replies | 84 view(s)
• February 19th, 2019, 20:03
Yep. (Nod)
9 replies | 150 view(s)
• February 19th, 2019, 18:58
So, correct are only the statements (1), (4), (5), or not? (Wondering)
9 replies | 150 view(s)
• February 19th, 2019, 18:40
Correct. (Nod)
9 replies | 150 view(s)
• February 19th, 2019, 18:31
Ah (6) is not true, because we have for every b. It would be true if we had for some b, or not? (Wondering)
9 replies | 150 view(s)
• February 19th, 2019, 17:48
We have the property that the product of an invertible matrix with another matrix has the same rank as that other matrix. Can we prove that...
9 replies | 150 view(s)
• February 19th, 2019, 15:45
Congratulations! :cool:
4 replies | 85 view(s)
• February 19th, 2019, 15:41
Okay, if we are to consider a solution of the form: y=t^r Then: y'=rt^{r-1} y''=r(r-1)t^{r-2}
4 replies | 84 view(s)
• February 19th, 2019, 10:27
Congratulations, and welcome to the team! (Yes)
4 replies | 85 view(s)
• February 19th, 2019, 06:51
Hi, and welcome to the forum. Can you figure out the initial position (height above the ground) of the minute hand tip at 10 a.m.? Also, do you...
1 replies | 54 view(s)
• February 19th, 2019, 00:00
Let's try $$x=5$$: \sqrt{5-1}=5-7 2=-2 Is this true?
4 replies | 77 view(s)
• February 18th, 2019, 23:57
Overview: This product is designed to allow you to specify which usergroups will have access to the user ignore system. Users who are not a member...
0 replies | 49 view(s)
• February 18th, 2019, 22:42
What do you get when you substitute each potential solution into the original equation?
4 replies | 77 view(s)
• February 18th, 2019, 20:22
MarkFL replied to a thread Starred Posts in vBulletin Products
I've installed this product on many vB sites without issue. As I said in another thread, I really recommend that you upgrade your vB. It's very old....
4 replies | 770 view(s)
• February 18th, 2019, 20:18
MarkFL replied to a thread Forum Marquee in vBulletin Products
Please send me the login credentials by PM to an admin account on your site, and I will see if I can figure out what the issue on your site is. You...
2 replies | 569 view(s)
• February 17th, 2019, 18:20
Is the rank of $AB$ less than the minimum of the rank of $A$ and the rank of $B$ ? (Wondering) Does it need a proof or can we just say...
9 replies | 150 view(s)
• February 17th, 2019, 13:36
Suppose less than 2 columns of $B$ are not in the null space of $A$. Then at least 4 columns are in the null space. What is the rank of $AB$ then?...
9 replies | 150 view(s)
• February 17th, 2019, 13:08
Could you explain to me this part further? I got stuck right now. (Wondering) So, a system $Ax=b$ has either no solution or infinitely...
9 replies | 150 view(s)
• February 17th, 2019, 12:24
Hey mathmari!! That's about the nullity of $B$. It's not related to the nullity of $A$ is it? (Worried) Since the rank of $A$ is $2$, its null...
9 replies | 150 view(s)
• February 17th, 2019, 10:26
Hey!! :o Let $A$ be a $4\times 5$ matrix with rank $2$ and let $U$ be the corresponding row echelon form matrix. I want to check if the...
9 replies | 150 view(s)
• February 17th, 2019, 09:24
Hi SigmaS, welcome to MHB! ;) In higher level math we don't always deal with regular multiplication and addition. Even then, PEMDAS is usually...
1 replies | 90 view(s)
More Activity

### 9 Visitor Messages

1. Would it be possible if you helped me on a thread in the Trigonometry Forum? I am still stumped.
2. Thanks so much evinda!
3. Thanks evinda , sorry for late reply. I am busy with exams these days.
4. Thank you very much, evinda!
5. Hey evinda,

I think if you ask for the proof of FLT for n = 4 in a different thread it would be better as it would be off-topic on the current thread. If you post it as a separate question, I'd be more than willing to answer to it.
6. Thank you very much!!!
7. Thanks, but I would have liked to stay 13.
8. Ok,thanks!!!!
9. Hello and welcome to MHB, evinda!

If you have any questions or comments about the forums, please feel free to address them to me or another staff member. We are happy to help, and look forward to your participation here!

Best Regards,

Mark.
Showing Visitor Messages 1 to 9 of 9

#### Statistics

Total Posts
3,602
Posts Per Day
1.68
Thanks Given
3,493
1,089
##### Visitor Messages
Total Messages
9
Most Recent Message
October 12th, 2015 13:14
##### General Information
Last Activity
February 16th, 2019 15:31
Last Visit
January 20th, 2019 at 17:18
Last Post
December 9th, 2018 at 18:21
Join Date
April 13th, 2013

### 12 Friends

1. #### bwpbruceOffline

MHB Apprentice

MHB Master

3. #### Henry ROffline

MHB Apprentice

4. #### ineedhelpnowOffline

MHB Journeyman

MHB Seeker

6. #### MarkFLOffline

Pessimist Singularitarian

7. #### mathbalarkaOffline

MHB Journeyman

MHB Master

9. #### Pantaron EducatOffline

MHB Apprentice

10. #### Rido12Offline

MHB Journeyman

Showing Friends 1 to 10 of 12
Page 1 of 2 12 Last