4. Let f(x) = x* – 3x – 5. (a) Show that the equation f(x) = 0 has a unique root a in [1.5, 2]. (b) Let the iterative formula be x, = g(x,-1) = {/3x-1+5, for n = 1, 2, 3, .... 'n-1 'n-1 (i) Show that 1.5 < g(x)<2 for all x in [1.5, 2]. (ii) Find K= max g'(x) . 1.5Sxs2 (c) With x, = 2, find the least number of iterations required to give the estimate of a correct to %3D 4 decimal places and hence find the estimated value of a correct to 4 decimal places.
4. Let f(x) = x* – 3x – 5. (a) Show that the equation f(x) = 0 has a unique root a in [1.5, 2]. (b) Let the iterative formula be x, = g(x,-1) = {/3x-1+5, for n = 1, 2, 3, .... 'n-1 'n-1 (i) Show that 1.5 < g(x)<2 for all x in [1.5, 2]. (ii) Find K= max g'(x) . 1.5Sxs2 (c) With x, = 2, find the least number of iterations required to give the estimate of a correct to %3D 4 decimal places and hence find the estimated value of a correct to 4 decimal places.
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter4: Polynomial And Rational Functions
Section4.4: Complex And Rational Zeros Of Polynomials
Problem 15E
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