Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Direction field/slope field

  1. Jul 27, 2005 #1
    Does anybody know how to plot the direction field of [tex]y^{\prime} = 5 - 3\sqrt{y}[/tex]?

    I get error messages because the independent variable isn't there. I've attached a mathematica notebook that shows it.

    Any help is highly appreciated.
     

    Attached Files:

  2. jcsd
  3. Jul 27, 2005 #2
    Your Y values cannot be less than 0 since it has a y^.5, that's what is messing you up....stick to {y, 0, 10} and you will be fine....
     
  4. Jul 28, 2005 #3
    You're definitely right. It has nothing to do with the independent variable, and I should have paid attention to the values of y. It works now! Thank you very much.
     
  5. Jul 28, 2005 #4

    James R

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    What's a direction field?
     
  6. Jul 28, 2005 #5
  7. Jul 29, 2005 #6

    James R

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    Thanks, thiago_j.
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook