Plotting Direction Fields for Differential Equations: A Mathematica Tutorial

  • Thread starter Thread starter DivGradCurl
  • Start date Start date
  • Tags Tags
    Direction Field
Click For Summary
SUMMARY

This discussion focuses on plotting the direction field for the differential equation y' = 5 - 3√y using Mathematica. The main issue encountered was related to the domain of the function, specifically that y values must be non-negative due to the square root. The solution involved restricting the y values to the range {y, 0, 10}, which resolved the error messages. Additionally, a reference to a slope field resource was provided for further understanding.

PREREQUISITES
  • Understanding of differential equations and direction fields
  • Familiarity with Mathematica software
  • Basic knowledge of function domains, particularly square root functions
  • Ability to interpret error messages in Mathematica
NEXT STEPS
  • Learn how to create direction fields in Mathematica for various differential equations
  • Explore the concept of slope fields and their applications in differential equations
  • Investigate the use of Mathematica's Plot function for visualizing mathematical functions
  • Study the implications of function domains on graphing in Mathematica
USEFUL FOR

Mathematics students, educators, and anyone interested in visualizing differential equations using Mathematica.

DivGradCurl
Messages
364
Reaction score
0
Does anybody know how to plot the direction field of y^{\prime} = 5 - 3\sqrt{y}?

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.
 

Attachments

Physics news on Phys.org
thiago_j said:
Does anybody know how to plot the direction field of y^{\prime} = 5 - 3\sqrt{y}?

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.

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...
 
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.
 
What's a direction field?
 
Thanks, thiago_j.
 

Similar threads

  • · Replies 9 ·
Replies
9
Views
2K
  • · Replies 7 ·
Replies
7
Views
3K
  • · Replies 4 ·
Replies
4
Views
4K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 23 ·
Replies
23
Views
3K
  • · Replies 2 ·
Replies
2
Views
2K
Replies
13
Views
2K
Replies
9
Views
2K
Replies
11
Views
3K
  • · Replies 4 ·
Replies
4
Views
2K