Recent content by jamesponty

  1. J

    Crank-Nicolson method for a parabolic differential equation

    OK, here is what I've done so far. It is only an adaption of code that we were given for the assignment. We are supposed to plot a number of representitive prolfiles for temp and use trial and error to determine a suitable value for the t interval. It also states to use N=12 steps and to advance...
  2. J

    Crank-Nicolson method for a parabolic differential equation

    Thanks for your reply. I've looked through the links you gave me fairly thoroughly but still really don't know where to start from. I have sample code for Matlab to solve the problem du/dt=d^2u/dx^2 and am only meant to be able to alter this code to account for the "-2".
  3. J

    Crank-Nicolson method for a parabolic differential equation

    Hi, Just wondering if somebody could point me in the right direction. I have the parabolic differential equation: du/dt=d2u/dx2 -2 I need to get a MATLAB script to solve this but I have no idea how to handle the -2. I also have no idea how to edit the MATLAB scripts I've found to...
  4. J

    State space system model derivation - hard and really fast - PLEASE

    State space system model derivation - hard and really need help fast - PLEASE! Hi, Just found this site (a little too late I fear!). I have an assignment due tomorrow and I can not solve the last part of it. We are able to source information from anywhere to complete the assignment and you...
  5. J

    State space system model - hard and really fast - PLEASE

    State space system model - hard and really need help fast - PLEASE! Hi, Just found this site (a little too late I fear!). I have an assignment due tomorrow and I can not solve the last part of it. We are able to source information from anywhere to complete the assignment and you guys are my...
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