Differential Equations Project

Computer Lab Modules

 

Introduction to Mathematica's Solution of D.E.'s

Preliminaries.

 

Exercise 1. Use pencil and paper techniques and find the general solution to the D. E.
[Graphics:e1.txtgr1.gif].

 

Exercise 2. Use pencil and paper techniques and find the general solution to the I. V. P.
[Graphics:e1.txtgr2.gif].

 

Exercise 3. Use pencil and paper techniques and find the general solution to the I. V. P.
[Graphics:e1.txtgr3.gif].

 

Computer Lab Work.

First load Mathematica's Plot Vector Field subroutine.

[Graphics:e1.txtgr5.gif][Graphics:e1.txtgr4.gif]
 

Exercise 4. Use Mathematica to find the general solution to the D. E.
[Graphics:e1.txtgr6.gif].

[Graphics:e1.txtgr5.gif][Graphics:e1.txtgr7.gif]
 

Exercise 5. Use Mathematica to find the general solution to the I. V. P.
[Graphics:e1.txtgr8.gif].

[Graphics:e1.txtgr5.gif][Graphics:e1.txtgr9.gif]
 

Exercise 6. Use Mathematica to find the general solution to the I. V. P.
[Graphics:e1.txtgr10.gif].

[Graphics:e1.txtgr5.gif][Graphics:e1.txtgr11.gif]
 

Exercise 7. Use Mathematica's general solution and substitute values C = 0, 1, 2.
Plot the solutions over the interval [Graphics:e1.txtgr12.gif].

[Graphics:e1.txtgr5.gif][Graphics:e1.txtgr13.gif]
 

Exercise 8. Use Mathematica's general solution and make a table of functions
for the values C = -10, -9, ... , -2, -1, 0, 1, 2, ... ,10.
Plot the solutions over the interval [Graphics:e1.txtgr14.gif].

[Graphics:e1.txtgr5.gif][Graphics:e1.txtgr15.gif]
 

Exercise 9. Use Mathematica's Plot Vector Field subroutine and plot the vector slope field for the D. E.
[Graphics:e1.txtgr16.gif].

[Graphics:e1.txtgr5.gif][Graphics:e1.txtgr17.gif]
 

Exercise 10. Plot the solutions you found in 8 and the vector slope field in 9.

[Graphics:e1.txtgr5.gif][Graphics:e1.txtgr18.gif]
 
 

Solutions.



Return to the Differential Equations Project

Return to the Numerical Analysis Project

Return to the Complex Analysis Project

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(c) John H. Mathews, 1998