Exercise 2.7: Let f(x) = x² - 2x - 3=0 (a) Find the two roots for f(x) analytically. (b) Show that f(x) can be rearranged into the following forms x = 9₁(x) = √2x+3 x = 92(x) = = x = 93(x) = 3 x-2 -3 2 (c) With these three expressions for gi(x), use the fixed point iteration method to find the approximate root for f(x). Start with the initial guess of xo = 4. Compare your solutions to the answer you get in part a).

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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Exercise 2.7: Let
f(x) = x² – 2x − 3 = 0
(a) Find the two roots for f(x) analytically.
(b) Show that f(x) can be rearranged into the following forms
x = 9₁(x) = √2x+3
x = 9₂(x)
x = 93(x)
=
=
3
x-2
2
X
-3
(c) With these three expressions for gi(x), use the fixed point iteration method
to find the approximate root for f(x). Start with the initial guess of xo = 4.
Compare your solutions to the answer you get in part a).
(d) Sketch all the g(x) and show what is happening graphically.
Transcribed Image Text:Exercise 2.7: Let f(x) = x² – 2x − 3 = 0 (a) Find the two roots for f(x) analytically. (b) Show that f(x) can be rearranged into the following forms x = 9₁(x) = √2x+3 x = 9₂(x) x = 93(x) = = 3 x-2 2 X -3 (c) With these three expressions for gi(x), use the fixed point iteration method to find the approximate root for f(x). Start with the initial guess of xo = 4. Compare your solutions to the answer you get in part a). (d) Sketch all the g(x) and show what is happening graphically.
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