Lab for Newton's 2D Method

Lab for Newton's 2D Method

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Newton-Raphson Method in 2-Dimensions. To solve the non-linear system
[Graphics:n2.txtgr1.gif]
given one initial approximation [Graphics:n2.txtgr2.gif] and using Newton-Raphson iteration.

[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr3.gif]
 

First load Mathematica's subroutine "ImplicitPlot" and the graphics package "Colors".

[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr5.gif]
 
 

Report to be handed in.

Computer Exercises
 

 

Exercise 1. Use Newton's method to find the solutions of the nonlinear system:
[Graphics:n2.txtgr6.gif]

[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr7.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr8.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr9.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr10.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr11.gif]

[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr12.gif]

 

Now, use the Newton-Raphson method to find a numerical approximation to the root near (2, 0.25).

[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr13.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr14.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr15.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr16.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr17.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr18.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr19.gif]
 

Next, use the Newton-Raphson method to find a numerical approximation to the root near (0.0, 1.0).

[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr20.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr21.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr22.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr23.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr24.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr25.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr26.gif]
 
 

Exercise 2. Use Newton's method to find the solutions of the nonlinear system:
[Graphics:n2.txtgr27.gif]

[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr28.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr29.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr30.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr31.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr32.gif]

[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr33.gif]

 

Four starting values, near the four solution points must be used.

[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr34.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr35.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr36.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr37.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr38.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr39.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr40.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr41.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr42.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr43.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr44.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr45.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr46.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr47.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr48.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr49.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr50.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr51.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr52.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr53.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr54.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr55.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr56.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr57.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr58.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr59.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr60.gif]
[Graphics:n2.txtgr4.gif][Graphics:n2.txtgr61.gif]
 

 

 

(c) John H. Mathews, 1998