Instructions for using SAGE

• Go to SageMathCloud.
  Create an account or login using your email address and sagecloud password.
• For an overview of SageCloud see YOUTUBE VIDEO. However this video is for computer geeks with a lot of patience. Here is more information regarding Sage
• After you login to SageCloud click on New Project.
• Under Title enter something like
  Direction Fields - Homework 3
  Then click on Create Project.
  A new window should open showing your Projects. Click on Direction Fields – Homework 3 or whatever name you gave your project. Yet another window should open. Then you click on Create or Import a File, Worksheet, Terminal or Directory... Then click on Sage Worksheet.
• This will bring you to a blank page that looks like:

  1 |
  
  
  
  

  Type as follows:

  1 var('x,y')
  2 df=plot_slope_field(4*x/y, (x,-3,3), (y,-6,6))
  3 show(df)
  

  (Of course you dont actually type the line numbers 1,2,3 etc).
  Now hold the SHIFT key and press the ENTER key. The plot of the direction field of the DE
  dy/dx = 4x/y should appear.
  
  For more examples see the sage worksheet below.

• Sample SAGE WORKSHEETS:
  • DF-examples.sagews (sagews)
  • DF-examples.pdf (PDF)