Recent content by kakolukia786

  1. K

    Maple demonstration of kepler law

    Hello, I have been trying to do an assignment for one of my physics class. We are trying to demonstrate the planetary motion using Kepler's law. I have been trying to solve a integral. I was able to solve it using maple. I am trying to solve equation 29 in attached figure. I got equation 31...
  2. K

    Self-Learning Relativity: 4-Dot Product & qE.u Equation?

    I am studying relativity by myself. There is one problem in the book which says that the 4-dot product of the Minkowski force and proper velocity is zero. But again it say that qE.u = change in energy over time. Is there a contradiction? If not, Am I missing something important. here q is...
  3. K

    How does Maxwell equation suggest that the speed of light is the same

    Hi guys, I am reading griffiths electrodynamics. I have a question. How does Maxwell equation suggest that the speed of light is same for all observer? I know Maxwell's equation gives a value of C. How can we infer that it is same for all observer. Special relativity just assumes that the...
  4. K

    Question about 2-D convolution

    Hi, I have been given two data set F = [1 0 0 1; 2 1 0 1; 1 2 1 0; 0 1 0 2] and G = [1 0; 1 2], here separated by (;) means they are different rows. I have been asked to compute the 2-D periodic convolution. [b]2. Homework Equations I know how to calculate the 2-D periodic convolution for 2...
  5. K

    Discrete Fourier Transform question

    Hi, I am learning Fourier transformation by my own. I am reading a book "Fourier Transformation" by R. Bracewell. In chapter 11, in examples of discrete Fourier transforms, it gives for N =2, {1 0} transforms to 1/2{1 1}. I can do this in MATLAB but I can't figure it out how to do it by hand...
  6. K

    Finding the fourier series coefficients for cos(pi)x for unit periods

    I was able to figure it out myself. Thanks anyways
  7. K

    Finding the fourier series coefficients for cos(pi)x for unit periods

    Hi all, How do I compute the Fourier series coefficients for unit periods for cos(pi)x, the interval is from -1/2 to 1/2. I know the formula but I am getting a wrong answer ?
  8. K

    What Frequency Appears as 1 Hz When Sampled at 0.2 Seconds Due to Aliasing?

    Hi. I have been given a plot for 1 Hz, sampled at 0.2 sec. And, 4 Hz and 11 Hz has also been plotted. So, from the plot, I can see that its really hard to distinguish between the signals after digitalization. My question is how do I find the next higher frequency which, when sampled at 0.2 secs...
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