Mathematica the Simplify[] command

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Homework Help Overview

The discussion revolves around simplifying a complex mathematical expression involving variables and fractions, specifically in the context of using Mathematica's Simplify[] command. The original poster seeks to simplify the expression as much as possible before further manipulation.

Discussion Character

  • Exploratory, Mathematical reasoning, Problem interpretation

Approaches and Questions Raised

  • Participants discuss various attempts at simplification, including expanding and factoring parts of the expression. There are questions about the degree of the polynomial in the denominator and the validity of the simplifications presented.

Discussion Status

Some participants have provided feedback on the simplifications attempted, with one confirming that a program was used to verify the simplest form of the expression. Others express a desire for further simplification and share resources like Mathematica and Wolfram Alpha for assistance.

Contextual Notes

There is an emphasis on the need for simplification before proceeding with further calculations, indicating that the expression is part of a larger problem. Participants are also navigating the complexities of polynomial degrees in their discussions.

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Homework Statement


Simplify to a certain extent, as much as possible (factorized form would be best):

[tex]\frac{\sqrt{3}}{2}\left(\frac{md}{m-\sqrt{3}}\right)^2+\frac{\sqrt{3}}{2}\left(\frac{m(s+d)}{m+\sqrt{3}}\right)^2+\frac{1}{2}\left(s+\frac{md}{m-\sqrt{3}}-\frac{m(s+d)}{m+\sqrt{3}}\right)\left(\frac{\sqrt{3}md}{\sqrt{3}-m}+\frac{\sqrt{3}m(s+d)}{m+\sqrt{3}}\right)[/tex]


The Attempt at a Solution


This isn't an actual question but rather a part of a bigger picture. I need this simplified as much as possible before I can even think of manipulating it further.

I've tried quite a bit, but after expanding the last factored expression, it became pretty ugly. This route seems most promising:

[tex]\frac{\sqrt{3}}{2}\left(\left(\frac{md}{m-\sqrt{3}}\right)^2+\left(\frac{m(s+d)}{m+\sqrt{3}}\right)^2+\left(s+\frac{md}{m-\sqrt{3}}-\frac{m(s+d)}{m+\sqrt{3}}\right)\left(\frac{m(s+d)}{m+\sqrt{3}}-\frac{md}{m-\sqrt{3}}\right)\right)[/tex]

[tex]\frac{\sqrt{3}}{2}\left(\left(\frac{md}{m-\sqrt{3}}\right)^2+\left(\frac{m(s+d)}{m+\sqrt{3}}\right)^2+s\left(\frac{m(s+d)}{m+\sqrt{3}}-\frac{md}{m-\sqrt{3}}\right)-\left(\frac{2\sqrt{3}md+\sqrt{3}ms-m^2s}{m^2-3}\right)^2\right)[/tex]

[tex]\frac{\sqrt{3}}{2}\left(\left(\frac{md}{m-\sqrt{3}}\right)^2+\left(\frac{m(s+d)}{m+\sqrt{3}}\right)^2-s\left(\frac{2\sqrt{3}d+\sqrt{3}s-ms}{m^2-3}\right)-m^2\left(\frac{2\sqrt{3}d+\sqrt{3}s-ms}{m^2-3}\right)^2\right)[/tex]

I'm unsure of what else to do without making a big mess. And this still isn't simple enough for what I need this for, so if you have the stomach to tackle this, please do so :smile:
 
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Thanks for the response.

I don't quite understand what your final solution is. When it gets to the : and then it has just one entire fraction. That one fraction can't possibly be equal? It only has a second degree for m, while if you look at this part which is located on the last line in the last factor of my OP:

[tex]m^2\left(\frac{2\sqrt{3}d+\sqrt{3}s-ms}{m^2-3}\right)^2[/tex]

it clearly suggests the denominator should be of a 4th degree in m, no?
 


I hope this answers your question.(=
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Oh wow thanks a lot for that!

It still took me a while to understand what was happening, but it all sunk in :smile: and when I tested it for some values of s,d and m and they turned out equal, I was even more ecstatic!
 


you are most welcome(=
 


Did you simplify this yourself, or did you use a program of some sort?
Reason being because I'm going to need more simplifying of this type to be done.
 


I've checked with a program and indeed it is the simplest form.
 


If you have access to Mathematica the Simplify[] command would come in handy.

Come to think of it there might also be something similar you can use on Wolfram Alpha to simplify expressions.
 

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