The auxiliary equation of y"" - 4y" - 4y' + 16y = 0 is r³-4r² - 4r + 16 = 0. The auxiliary equation has a root in the interval [-0.75,3.75]. Let f(r) = r³ - 4r² - 4r + 16, so that the roots of the auxiliary equation can be determined by solving f(r) = 0. Then, applying four iterations of the Bisection Method to f(r), using the initial approximations r₁= -0.75 and r2 = 3.75, gives the following approximations for the root in [-0.75,3.75]: r₂(²) = 13

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.
Chapter11: Differential Equations
Section11.1: Solutions Of Elementary And Separable Differential Equations
Problem 2YT
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And r3(4)

«
The auxiliary equation of y"" - 4y" - 4y' + 16y = 0 is
r³ − 4r² − 4r + 16 = 0. The auxiliary equation has a root in the interval
[-0.75,3.75].
Let f(r) = r³ - 4r² - 4r + 16, so that the roots of the auxiliary equation
can be determined by solving f(r) = 0.
Then, applying four iterations of the Bisection Method to f(r), using
the initial approximations r₁= -0.75 and r2 = 3.75, gives the following
approximations for the root in [-0.75, 3.75]:
(¹1) = [
(2)
13
13
33)
=
(64)
Transcribed Image Text:« The auxiliary equation of y"" - 4y" - 4y' + 16y = 0 is r³ − 4r² − 4r + 16 = 0. The auxiliary equation has a root in the interval [-0.75,3.75]. Let f(r) = r³ - 4r² - 4r + 16, so that the roots of the auxiliary equation can be determined by solving f(r) = 0. Then, applying four iterations of the Bisection Method to f(r), using the initial approximations r₁= -0.75 and r2 = 3.75, gives the following approximations for the root in [-0.75, 3.75]: (¹1) = [ (2) 13 13 33) = (64)
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