An ancient technique for extracting the square root of an integer N > 1 going back to the Babylonions involves using the iteration process N 1 Xn +- 2 In+1 = In where ro is the largest integer for which x2 < N. Show that if by change x² the sequence is constant, i.e., x„ = /N for all n = simply Newton's method applied to N, 1, 2, ... Show that the sequence is %3D f(x) = x² – N 1 How many iterations does it take to calculate v411 to three decimal places using xo = 20?

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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An ancient technique for extracting the square root of an integer N > 1 going back to
the Babylonions involves using the iteration
process
N
1
Xn +-
2
In+1 =
In
where ro is the largest integer for which x2 < N. Show that if by change x²
the sequence is constant, i.e., x„ = /N for all n =
simply Newton's method applied to
N,
1, 2, ... Show that the sequence is
%3D
f(x) = x² – N
1
How many iterations does it take to calculate v411 to three decimal places using
xo = 20?
Transcribed Image Text:An ancient technique for extracting the square root of an integer N > 1 going back to the Babylonions involves using the iteration process N 1 Xn +- 2 In+1 = In where ro is the largest integer for which x2 < N. Show that if by change x² the sequence is constant, i.e., x„ = /N for all n = simply Newton's method applied to N, 1, 2, ... Show that the sequence is %3D f(x) = x² – N 1 How many iterations does it take to calculate v411 to three decimal places using xo = 20?
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