Recent content by asi123

Homework Statement Hey guys. I've been sitting on this one for an hour or so. (got nothing) http://img138.imageshack.us/img138/765/24869754.png I think it has something to do with schwarz lemma but I'm not sure. Any help will be much appreciate. Thanks a lot. Homework...

Homework Statement Hey guys. I hope this is the right place to post this question. http://img641.imageshack.us/img641/70/97822806.jpg I have this "simple" complex function, and I need to decide where this function is analytic in the complex domain. So, I used the cauchy riemann...

Homework Statement Hey guys. I have this equation in red (in the pic) which I need to solve http://img241.imageshack.us/img241/9323/scan0004n.jpg As you can see I came up with with 2*t0. When I solve it in Matematica I come up with t2=t0 without the 2. Also, their answer in the...

Homework Statement Hey guys. I have this problem: http://img32.imageshack.us/img32/1561/78854429.jpg For the first part, I believe that adding those solution is just like adding the two levels of energy they represents and that's way this is not a solution for the equation, I...

Well, here is the second part of the question http://img207.imageshack.us/img207/879/95899388.jpg I also posted there answer. I think they have a mistake, I marked it in the red box. Shouldn't it be A^2=1/2 ? Am I missing something? Thanks a lot.

Oh, now I get it. Thanks a lot.

Yeah, but I don't have i and j inside the functions so how can I come up with the kronecker delta? How can I show that if i=j then it's 1 and if i does not equal to j, it's 0 if I don't have i and j? Thanks.

Well, where are i and j in my problem? I mean, this is not a series, it's a function.

Homework Statement Hey guys. http://img39.imageshack.us/img39/2345/27760913.jpg I need to show that these wave functions are orthonormal. I'm a bit confuse, what's i and what's j? I mean, do I need to take both of the functions, put them in the integral and to show that the result...

Ok, I don't see any logic in that. This is not a homework question, I know the answer, why would you give me a hint? Is there a rule how to get to the angle? Thanks.

For this on, but I'm asking in general. Thanks.

Homework Statement Hey guys. I have the next transfer function http://img195.imageshack.us/img195/7924/scan0002l.jpg And I want to find the angle of it. I know I can break it into REAL and IMAGINARY but I'm looking for a faster way, is there? Thanks. Homework Equations...

Homework Statement Hey guys. I have this kid throwing a ball with mass M and from high H. He is trying to hit a crack in the floor. I need to show that in order for the ball not to miss the crack, the minimal width of the crack (delta x) should be the expression in the red box in the...

Homework Statement Hey guys. http://img397.imageshack.us/img397/7987/scan0001q.jpg I have this operator and I need to check if it's Unitary. I checked the "length of vector preservation test" as you can see in the pic and I came up with that, that it does not keep the length of a...

Homework Statement Hey guys. I have this question: http://img122.imageshack.us/img122/2936/84391716.jpg I think that the flux through the top and bottom is zero and that because A does not have a component in the z axis direction. So all that got left is the lateral area. Well, I...