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

[vantz]

1.

2.

3.

4. [PLAIN]http://img176.imageshack.us/img176/7186/34581263.jpg
5. [PLAIN]http://img87.imageshack.us/img87/8069/16289518.jpg [/PLAIN]
6. [PLAIN]http://img291.imageshack.us/img291/5840/49412218.jpg [/PLAIN]
7. [PLAIN]http://img809.imageshack.us/img809/8945/20137696.jpg [/PLAIN]
8. [PLAIN]http://img99.imageshack.us/img99/7555/78954615.jpg

 

[Phyisab****]

What do you want to know? These are not equations with fancy names.

 

[MaxL]

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.

 

[Phyisab****]

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.

 

[vantz]

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