Math Is Fun Forum

nunun

Member

Registered: 2010-10-25

Posts: 7

How to expand this equation?

Hi,
I've problem solving this equation. For first, i need to solve the numerator of the equation.

I assumed:

N =6
M =6
Pj = P1 = P2 = P3 = P4 = P5 = P6

But, i've problem expanding the equation since there are double notation of summation. Can anyone solve this for me for the numerator part only.

Thanks.

nunun

Member

Registered: 2010-10-25

Posts: 7

Re: How to expand this equation?

There's an error here, the image i uploaded is not appear, anyone know how to upload image in this post?

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: How to expand this equation?

Hi nunun;

Welcome to the forum.

How big is the image? If it is too big it will not upload. It cannot be bigger than 100 kb.

I presume you tried the upload button. Is the image on a web site or on your hard drive?

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

nunun

Member

Registered: 2010-10-25

Posts: 7

Re: How to expand this equation?

Hi,

the image is in my hard drive, its the image of an equation i referered in my first post. The size is only 27kB. I dont really understand how to use the [img] tag.
Thanks for the concern ya..

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: How to expand this equation?

Hi;

I just want to see the problem too.

You do not use img.

Do you see upload slots? Underneath the post box.

Where did he go? He\She left, it must be my cologne.
Sorry to use it but a girl is coming over to bring me some food so I  am all doodadded up and pretty.

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

nunun

Member

Registered: 2010-10-25

Posts: 7

Re: How to expand this equation?

Yeah, i used the image upload part, and i have uploaded the image by using the upload slots.

Then, it didn't appear in my post as well as in the preview.

So, how should i upload the image?

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: How to expand this equation?

What type of file is it? What is its extension? Is it in a book, if so what book, title and author.
Can you type it out? Can you latex it? There is a site, I use it myself:

http://latex.codecogs.com/editor.php

Which has pull down menus for whatever math symbol you require.

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

nunun

Member

Registered: 2010-10-25

Posts: 7

Re: How to expand this equation?

Hi,

I have use the latex code. then i upload using the image upload. It still not appear. i don't understand how it works.

But, here is the link of the paper i referred for the equation. I want to understand the Equation 3, so that i have to expand it using the assumption given in my first post.

http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=4698234&tag=1

Author: Rong, L.;   Ben Haddada, O.;   Elayoubi, S.-E.;
Title: Analytical Analysis of the Coverage of a MBSFN OFDMA Network

Thanks a lot bobbym for your concern.:)

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: How to expand this equation?

Hi nunun;

I am unable to access that document from that page.

What kind of file is it. Jpg, bmp. gif, png ...

You should have a print screen button on your keyboard. It is called print scr.
Press it when you have the equation on your screen. Then you can paste it into ms paint or any other image program you have.
Crop it and save as black and white, just get it under 100 kb. Then try to upload it again.

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

nunun

Member

Registered: 2010-10-25

Posts: 7

Re: How to expand this equation?

Hi ,

I still can't make it. Then, i've post the equation in my blog.
This is the url.
http://bibichi.blogspot.com/2010/10/hi-bobbym-you-can-refer-to-this.html

Thanks.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: How to expand this equation?

Hi nunun;

I got this off your blog.

That is the expansion of your double sum in the numerator.
That is the best I can do without having some information about what w, q , tau and delta are.

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

nunun

Member

Registered: 2010-10-25

Posts: 7

Re: How to expand this equation?

Hi bobbym,

i think i know now how to epand more the equation as i want.

Thanks a lot.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: How to expand this equation?

Hi nunun;

Glad to help, Actually I did not do anything. That expansion is pure junk.
I sure wish you would show me what you have discovered.

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.