What are the unknown functions and variables in this Mathematica program?

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SUMMARY

The discussion revolves around clarifying the unknown functions and variables in a Mathematica program. Key points include the ambiguity of variables such as D and U, the interpretation of powers and derivatives, and the confusion surrounding the equations presented. The participants emphasize the need for clear definitions and context to understand the transition from simple equations to a complex system of 36 differential equations. The conversation highlights the challenges faced by students in articulating their mathematical problems effectively.

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  • Understanding of Mathematica programming language
  • Familiarity with differential equations
  • Knowledge of complex numbers, specifically Sqrt[-1]
  • Basic principles of mathematical notation and functions
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  • Research how to define functions and variables in Mathematica
  • Learn about the interpretation of derivatives in Mathematica
  • Explore the use of complex numbers in mathematical programming
  • Study the formulation and solution of differential equations in Mathematica
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This discussion is beneficial for students, educators, and Mathematica users who are working with complex mathematical models and seeking clarity on variable definitions and equation transformations.

Reem Hashem
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Hello Mr Bill, Sorry again If I distrubed you ,but i really need your help in solving my Mathematica program , I wrote the explanation of my job in the PDF in details ,may that help you to understand what Iam looking for ,and thank you again of your help.
 

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Just looking at your pdf document.
Is D a variable or some unknown function?
Is U a variable or some unknown function?
Are what look like powers of D actually powers of D or are then n'th derivatives of something?
Are I and i both Sqrt[-1]?
"At x=0&1" where is x? There is no x in any of your equations.
"U=D U=V=0", If U is zero then D U must be zero, or do you mean something else?
"at h=0", can we just eliminate the h Sqrt[t] then?
"V=V1+V2", do you mean V=V1+I*V2?
I could come up with more and more questions like this.

IF a student mailed you that first dozen lines and you had not already spent days or weeks learning about this problem would you be able to figure out what this student was trying to do?
How would you imagine the student gets from two simple equations to 36 differential equations?

I am more confused with each reply
 
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