Example 19.   Use the Modified Euler Method to find numerical solutions to the D. E.  [Graphics:Images/HarvestingModelMod_gr_323.gif].  

Solution 19.

The solution curves with the initial conditions  [Graphics:../Images/HarvestingModelMod_gr_324.gif]  can all be computed over the interval  [Graphics:../Images/HarvestingModelMod_gr_325.gif].  
However the solution curves with the initial conditions do have vertical asymptotes so be careful how large an interval you use.

[Graphics:../Images/HarvestingModelMod_gr_326.gif]


[Graphics:../Images/HarvestingModelMod_gr_327.gif]

This is the same as the graph that was obtained in Example 17.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(c) John H. Mathews 2004