Recent content by Mary

Ah, nevermind, I see now. After reviewing the trigometric identities on wikipedia I see how simple it is now. Thanks a bunch for all of your all's help!

Thank you for your quick response. I just realized that I accidently put n for both eigenfunctions. One of the sin's should be l\pix/a. So, should the problem be different then?

Ah, yes, I accidently put n\pix /a for both eigen functions. One should be l\pix /a. Thank you.

Hey, I'm having trouble with one of the examples in my quantum book. I'm suppose to be showing that two eigenfunctions are orthogonal and in order to do that I have to solve the integral I have attached to this forum. I have the solution but I don't understand the steps! I believe it may be a...

I have done a lot of undergraduate research in relation to optics and infinite lens systems. But, I have also wanted to have more experience with mechanical systems. Does anyone know of an interesting mechanical system that I could apply elementary analysis too? ...maybe a gyroscope? or maybe...

RE Yes, I was also thinking of using Newton's derivations to get some ideas. Supposedly, there has been evidence that he stole most of his ideas from Hooke. I always thought that was pretty interesting. That also leads me to think that I may go more into the history of it than the math. I...

So, I am currently in an Advanced Calculus class (ie. elementary analysis of calculus). Our end project is to write a 5-6 page paper on a topic of our choice and relate it back to the class. A lot of the other students are economics majors so they are picking economic topics. I'm a physics...

Homework Statement So I was able to find a problem that was kind of similar to a homework problem that I am working on. Unfortunately, I'm not quite sure what is going on partially within the problem. In the problem they state that \phi=\phi*, but it does not state why. I was wondering...

Homework Statement How would I find the time-independent (unnormalized) wavefunction given the momentum? I don't know if this can be generalized without giving the momentum in the problem. I want to do this problem myself but I'm stuck. The problem states: A particle of mass m moves...

This makes a lot more sense now. Thanks for all of your help. I just couldn't accept that it was 0 and I wanted to know why. This is my first thread and its been so helpful!

I'm currently reading the book Introductory Quantum Mechanics by Richard Liboff 4th edition. I'm reading one of the proofs and I don't understand what is happening in one of the steps. The problem is trying to find the Hermitian adjoint of the operator \hat{D}=\partial/\partialx defined in...