Consider the function f(x) = x^3 + 5x − 4. a)Use the intermediate Value Theorem to prove that f(x) has a unique root in the interval [0, 1].
Consider the function f(x) = x^3 + 5x − 4. a)Use the intermediate Value Theorem to prove that f(x) has a unique root in the interval [0, 1].
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Consider the function f(x) = x^3 + 5x − 4.
a)Use the intermediate Value Theorem to prove that f(x) has
a unique root in the interval [0, 1].
b) Rewrite the equation f(x) = 0 under the form g(x) = x for
some function g(x) that satisfies the conditions for the convergence of the
iteration sequence xn+1 = g(xn) (Verify that the conditions are satisfied).
c) Use the fixed point iteration method to estimate the root
of the function f(x) in the interval [0, 1] to 4 decimal places, starting with
x0 = 0.72.
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