Recent content by Plecto

Alright, thanks for the response :) I had math at high school (equivalent) in 2008, I then took first year uni math in 2010 (barely made it), and now I'm taking second year uni math so there's a lot of holes in my knowledge :( I'm struggling to remember simple integration, differentiation etc...

Hi. We are learning about Laplace transforms at uni and I must say that this is a real pain. I have one questions concerning the concept of Laplace transforms, and also a question concerning a specific transform. The task is to make a Laplace transform of: t*sin(2t). I could do an integration by...

I should have read the last question I posted more carefully, was quite simple to be honest :) This question was a little different though: http://i46.tinypic.com/35ksuvq.jpg I found the formula E=(n^2*π^2*h^2)/(2mL^2). I can't really use this formula as both E and L are unknown. Is...

I see :) I'm really happy about getting a better understanding though, I've now solved enough problems to pass, but I will solve a couple of more just to be safe. One problem asked what the value of A must be if -L≤x≤L in ψ(x)=A. I figured that to be 1/2L which seems to match my calculation...

Thank you so much. I would then believe that function 1, 3 and 4 are normalized. Function 2 is a cosinus wave so if L isn't set, the area will be infinite. With function 5, x≥L so it doesn't matter what value L has, the area will be infinite. Another question that I didn't quite understand...

I think I understand, but I feel that I'm still getting something wrong. If L were given to me, I'm supposed to calculate A so that the function becomes normalized regardless of the value of L, right? I think I can make that happen for every one of the functions given :S I don't understand what...

Thank you for the quick responses. I took a picture of the problem mentioned, perhaps it's easier to understand: http://i46.tinypic.com/33vyn2f.jpg I didn't try to integrate them because I wanted to just plot them first to see how they looked like. Like the second one, A cos(x), plotting (A...

Hi. I'm studying electronics at uni and like every other engineering degree, we have to learn a little physics and chemistry. The chemistry feels almost too easy for me and the thermodynamics was not a problem either. But then the lecturer began talking about quantum mechanics (a subject that...