What are the 8 formulas I need to locate in my textbook?

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In summary, this conversation discusses various equations and formulas related to wave dynamics, acoustic harmonics, and reflections. The equations include the speed of a wave, angular frequency, acoustic harmonics in a tube, solutions to partial differential equations, the thin lens equation, and the need for an index of formulas in textbooks.
  • #1
vantz
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1.
2dm84tf.jpg

2.
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3.
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4. [PLAIN]http://img176.imageshack.us/img176/7186/34581263.jpg [Broken]
5. [PLAIN]http://img87.imageshack.us/img87/8069/16289518.jpg [Broken] [/PLAIN]
6. [PLAIN]http://img291.imageshack.us/img291/5840/49412218.jpg [Broken] [/PLAIN]
7. [PLAIN]http://img809.imageshack.us/img809/8945/20137696.jpg [Broken] [/PLAIN]
8. [PLAIN]http://img99.imageshack.us/img99/7555/78954615.jpg [Broken]
 
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  • #2
What do you want to know? These are not equations with fancy names.
 
  • #3
3 is from wave dynamics...I don't know if it has a name, but it describes the speed of a wave in terms of its wavelength and frequency or period.

5 relates angular frequency to ordinary frequency.

2 and 6 describes the acoustic harmonics of a tube...I think 2 describes an open tube, 6 a tube that is closed on one end.
 
  • #4
2. and 6. do not need to be associated with acoustics, they are very general parts of solutions to that type of partial differential equation. 1 could arise in any number of ways, it looks like the solution to a PDE, like Laplace's equation. 4 and 5 are pretty self explanatory. 7 looks like it describes a reflection magnitude. 8 is a thin lens equation.
 
  • #5
i'm just trying to locate them in the textbook, so basically i'd like to know which section they belong in

thanks for the help so far

It would be a good idea to have an index of formulas in textbooks
 

What are the 8 formulas that need to be identified?

The specific 8 formulas that need to be identified will vary depending on the context. It is important to provide as much information as possible, such as the subject or topic the formulas are related to, in order to accurately identify them.

How can I identify a formula?

To identify a formula, you can start by understanding the variables and symbols used in the formula. Then, try to determine the relationship between the variables and what they represent. Additionally, you can consult textbooks, online resources, or consult with a subject matter expert for assistance.

What if I can't identify a formula?

If you are unable to identify a formula, it may be helpful to provide more context or information about where the formula was found. It may also be beneficial to consult with others, such as colleagues or experts, for their insights and assistance.

Are there any tools or resources that can help with identifying formulas?

Yes, there are many tools and resources available such as online formula databases, formula identification software, and subject-specific textbooks. It may also be helpful to consult with a subject matter expert or attend a workshop or course on identifying formulas.

Why is it important to accurately identify formulas?

Accurately identifying formulas is important because it allows for better understanding and application of mathematical concepts and principles. It also helps in solving problems and making accurate calculations in various fields such as science, engineering, and economics.

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