• March 27th, 2020, 23:42
Here is this week's POTW: ----- Find the minimum value of $(u-v)^2+\left(\sqrt{2-u^2}-\dfrac{9}{v}\right)^2$ for $0<u<\sqrt{2}$ and $v>0$. ...
0 replies | 74 view(s)
• March 27th, 2020, 23:38
Hi MHB! I have decided to extend the deadline by another week so that our members can give this problem another shot and I am looking forward to...
1 replies | 195 view(s)
• March 20th, 2020, 02:18
Here is this week's POTW: ----- Show that the set of real numbers $x$ which satisfy the inequality \sum_{k=1}^{70}\dfrac{k}{x-k}\ge...
1 replies | 195 view(s)
• March 20th, 2020, 02:15
Congratulations to the following members for their correct solution! 1. castor28 2. lfdahl 3. kaliprasad 4. Oxide Solution from Oxide: ...
1 replies | 230 view(s)
• March 19th, 2020, 08:52
Just as a heads up, when we make the switch over to XenForo I will need to close MHB temporarily to do this. I hope it won't take more than part of a...
10 replies | 2054 view(s)
• March 14th, 2020, 11:03
Hi all, I know it's been a series of "we're getting close" but the dev team I hired to help with the key pieces of functionality I listed above...
10 replies | 2054 view(s)
• March 13th, 2020, 10:03
Here is this week's POTW: ----- How many perfect squares are divisors of the product $1!\cdot 2! \cdot 3! \cdots 9!$? ----- Remember to...
1 replies | 230 view(s)
• March 13th, 2020, 09:58
Congratulations to the following members for their correct solution!(Cool) 1. castor28 2. kaliprasad 3. lfdahl Solution from castor28: The...
1 replies | 269 view(s)
• March 4th, 2020, 09:34
Here is this week's POTW: ----- Consider the sequence of numbers 4, 7, 1, 8, 9, 7, 6, ... For $n>2$, the $n$th term of the sequence is the...
1 replies | 269 view(s)
• March 4th, 2020, 09:31
Congratulations to the following members for their correct solution! 1. castor28 2. MegaMoh Solution from castor28: If the generic point of...
1 replies | 392 view(s)
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### 29 Visitor Messages

1. Hello and welcome back to MHB, Fernando Revilla!

We are happy to see that you have returned, and we look forward to your continued participation here!

On Behalf Of MHB's Staff,

anemone.
2. Hello and welcome back to MHB, Fernando Revilla!

We are happy to see that you have returned, and we look forward to your continued participation here!

On Behalf Of MHB's Staff,

Jameson.
3. Hello and welcome back to MHB, Fernando Revilla!

We are happy to see that you have returned, and we look forward to your continued participation here!

On Behalf Of MHB's Staff,

Jameson.
4. Welcome back, Fernando! Glad to see you've rejoined the party!
5. Woow , it's been a while. Welcome back
6. Welcome back, Fernando!
7. Hey! There you are! I was wondering if you'd be back. We missed you!
8. Hey Fernando, nice to see you back!
9. Congratulations on the 500 post mark! It's great that you've been so active this year Looking forward to the next 500 posts.
10. hola profesor fernando que pena escribir en español pero no se ingles, queria saber si usted conoce alguna aplicacion de las integrales sin(x*x*x*x), he desarrollado un metodo numerico para calcularlas en cualquier valor comprendido en el intervalo de (4,infinito) y mi abogado me dice que tengo que encontrar una aplicacion para poder proteger y blindar de una forma mas segura los derechos de autor, estare pendiente de su respuesta, o si conoce a alguien que me pueda ayudar le agradeceria enormemente, gracias.

hello fernando teacher wanted to know if you know any application of the integral sin (x * x * x * x), I have developed a numerical method to calculate any value in the interval (4, infinity) and my lawyer tells me I have to find an application in order to protect and shield in a more secure copyright, I will be aware of your answer, or if you know someone who can help me I would appreciate greatly, thanks.

att
jefferson alexander vitola
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#### Basic Information

Biography:
Prof. of Mathematical Methods, Univ. Alfonso X El Sabio, Madrid.
(Up until the 2008/2009 academic year. I am now devoted to investigation).
Location:
Interests:
Epistemology of IN
Occupation:
Mathematician
Country Flag:
Spain

#### Statistics

Total Posts
661
Posts Per Day
0.22
Thanks Given
1,720
1,707
2.582
##### Visitor Messages
Total Messages
29
Most Recent Message
November 12th, 2017 04:01
##### General Information
Last Activity
November 12th, 2017 04:14
Last Visit
November 12th, 2017 at 04:14
Last Post
January 27th, 2017 at 14:34
Join Date
January 29th, 2012
Referrals
2
http://www.fernandorevilla.es/
Referred Members
Daniela, rsyed5

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