Consider the function, f(x) = x^3 − x^2 − 9x + 9. Answer the following: (a)  State the exact roots of f(x). (b)  Construct three different fixed point functions g(x) such that f(x) = 0. (Make sure that one of the g(x)’s that you constructed converges to at least a root). (c) Find the convergence rate/ratio for g(x) constructed in previous part and also find which root it is converging to? (d)  Find the approximate root, x⋆,  of the above function using fixed point iterations up to 4 significant figures within the error bound of 1 × 10^−3 using X0 = 0 and any fixed point function g(x) from part(b) that converges to the root(s).

Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter6: Applications Of The Derivative
Section6.CR: Chapter 6 Review
Problem 1CR
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Consider the function, f(x) = x^3 − x^2 − 9x + 9. Answer the following:

(a)  State the exact roots of f(x).
(b)  Construct three different fixed point functions g(x) such that f(x) = 0. (Make sure that one of the
g(x)’s that you constructed converges to at least a root).
(c) Find the convergence rate/ratio for g(x) constructed in previous part and also find which root it is
converging to?
(d)  Find the approximate root, x⋆,  of the above function using fixed point iterations up to 4 significant
figures within the error bound of 1 × 10^−3 using X0 = 0 and any fixed point function g(x) from part(b) that
converges to the root(s).

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