Write down the Lagrange form of the interpolating polynomial P(x) that satisfies P(x) = f(x) for x = = 1,...,n and x1 < x2 < · · · < xn• (1) Find the form of the polynomial that interpolates f(x) = 1 through the points x = x1 = 0.5, x2 = 1 and x3 = 3, then simplify it. Use this polynomial to estimate the value of ƒ (2) and find the error from the actual value.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
icon
Related questions
Question
Write down the Lagrange form of the interpolating polynomial P(x) that satisfies
P(x) = f(x) for x =
=
1, ...,
n and x1 < x2 < · · ·
< xn⋅
(1)
Find the form of the polynomial that interpolates f(x) = 1½ through the points
x₁ = 0.5, x2 = 1 and x3 3, then simplify it. Use this polynomial to estimate the
value of ƒ (2) and find the error from the actual value.
=
Using the error formula for Lagrange interpolation,
n
f(x) = P(x) +
-
(2 – x)
dn f
dxn
(§), for some ε € (x1,xn),
(2)
i=1
find upper and lower bounds for the error in your estimate above. How does this
compare with the actual error?
Transcribed Image Text:Write down the Lagrange form of the interpolating polynomial P(x) that satisfies P(x) = f(x) for x = = 1, ..., n and x1 < x2 < · · · < xn⋅ (1) Find the form of the polynomial that interpolates f(x) = 1½ through the points x₁ = 0.5, x2 = 1 and x3 3, then simplify it. Use this polynomial to estimate the value of ƒ (2) and find the error from the actual value. = Using the error formula for Lagrange interpolation, n f(x) = P(x) + - (2 – x) dn f dxn (§), for some ε € (x1,xn), (2) i=1 find upper and lower bounds for the error in your estimate above. How does this compare with the actual error?
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps with 8 images

Blurred answer
Recommended textbooks for you
Advanced Engineering Mathematics
Advanced Engineering Mathematics
Advanced Math
ISBN:
9780470458365
Author:
Erwin Kreyszig
Publisher:
Wiley, John & Sons, Incorporated
Numerical Methods for Engineers
Numerical Methods for Engineers
Advanced Math
ISBN:
9780073397924
Author:
Steven C. Chapra Dr., Raymond P. Canale
Publisher:
McGraw-Hill Education
Introductory Mathematics for Engineering Applicat…
Introductory Mathematics for Engineering Applicat…
Advanced Math
ISBN:
9781118141809
Author:
Nathan Klingbeil
Publisher:
WILEY
Mathematics For Machine Technology
Mathematics For Machine Technology
Advanced Math
ISBN:
9781337798310
Author:
Peterson, John.
Publisher:
Cengage Learning,
Basic Technical Mathematics
Basic Technical Mathematics
Advanced Math
ISBN:
9780134437705
Author:
Washington
Publisher:
PEARSON
Topology
Topology
Advanced Math
ISBN:
9780134689517
Author:
Munkres, James R.
Publisher:
Pearson,