Example.Use Newton's method and
Muller's method to find numerical approximations to the multiple rootof
the function.
Show details of the computations for the starting value.Compare
the number of iterations for the two methods.
Solution.
Graph the function.
Starting with,
use the Newton-Raphson method to find a numerical approximation to the root.
We can use Mathematica's Solve procedure to determine some of the
roots.
For Newton's method, how far away is the eighth iterationfrom
the root
?
Note. The last iteration is actually stored
in.
Starting with,
,
and
,
use Muller's method to find a numerical approximation to the root.
For Muller's method, how far away is the eighth iteration from the root
?
Note. The last iteration is actually stored
in.
This is closer thanwhich
was obtained with Newton's method.
We are done.
Aside.Compare with Mathematica's
built in routine.
Mathematica's answer is not so good, need to adjust the number of
iterations and the working precision.
Solution.
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