Example 9.  Solve the I.V.P.  [Graphics:Images/RungeKuttaMod_gr_110.gif].  

Solution 9.

Compute the Runge-Kutta solution based on 50 subintervals and plot the results.

[Graphics:../Images/RungeKuttaMod_gr_111.gif]


[Graphics:../Images/RungeKuttaMod_gr_112.gif]
[Graphics:../Images/RungeKuttaMod_gr_113.gif]


[Graphics:../Images/RungeKuttaMod_gr_114.gif]

[Graphics:../Images/RungeKuttaMod_gr_115.gif]

[Graphics:../Images/RungeKuttaMod_gr_116.gif]
[Graphics:../Images/RungeKuttaMod_gr_117.gif]
[Graphics:../Images/RungeKuttaMod_gr_118.gif]
[Graphics:../Images/RungeKuttaMod_gr_119.gif]
[Graphics:../Images/RungeKuttaMod_gr_120.gif]

Compute the Runge-Kutta solution based on 100 subintervals and plot the results.
Observe that one fewer subinterval is computed for this case.

[Graphics:../Images/RungeKuttaMod_gr_121.gif]

[Graphics:../Images/RungeKuttaMod_gr_122.gif]

[Graphics:../Images/RungeKuttaMod_gr_123.gif]
[Graphics:../Images/RungeKuttaMod_gr_124.gif]
[Graphics:../Images/RungeKuttaMod_gr_125.gif]
[Graphics:../Images/RungeKuttaMod_gr_126.gif]
[Graphics:../Images/RungeKuttaMod_gr_127.gif]

Compute the Runge-Kutta solution based on 200 subintervals and plot the results.
Observe that four fewer subintervals are computed for this case.

[Graphics:../Images/RungeKuttaMod_gr_128.gif]

[Graphics:../Images/RungeKuttaMod_gr_129.gif]

[Graphics:../Images/RungeKuttaMod_gr_130.gif]
[Graphics:../Images/RungeKuttaMod_gr_131.gif]
[Graphics:../Images/RungeKuttaMod_gr_132.gif]
[Graphics:../Images/RungeKuttaMod_gr_133.gif]
[Graphics:../Images/RungeKuttaMod_gr_134.gif]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(c) John H. Mathews 2004