Recent content by klovely

  1. K

    Okay I have a problem with using variables in differential equations

    Thank you soooo much!
  2. K

    Okay I have a problem with using variables in differential equations

    Consider the differential equation where I''+I=e^it where i= sqrt (-1) So I don't know what to do. I do know that The second derivative of c*t*e^(i*t) is -c e^(i t) (-2 i+t) But I don't know what to do for a and b and I need help to get threw this problem before I take my test...
  3. K

    Help Thrid second and first order differential equation

    Help! Thrid second and first order differential equation! I have no idea how to accomplish this problem. If anyone knows help please help me solve this example before I take my test! Solve y''' - y'' - y' + y - x = 0