Consider the following interpolating points for the function f(x) = x² - 2x: Xi 0 1 23 f(xi) 0 -1 0 3 (a) Use monomial basis to find P₁(x) that interpolates f(x) at x; for i = 0,1. Con- struct the Vandermonde matrix and then use the backslash in matlab to solve the linear system. (b) Repeat (a) to find P₂(x) that interpolates f(x) at x; for i = 0, 1, 2. (c) Repeat (a) to find P3(x) that interpolates f(x) at x, for i= (a) C = 0, 1, 2, 3.
Consider the following interpolating points for the function f(x) = x² - 2x: Xi 0 1 23 f(xi) 0 -1 0 3 (a) Use monomial basis to find P₁(x) that interpolates f(x) at x; for i = 0,1. Con- struct the Vandermonde matrix and then use the backslash in matlab to solve the linear system. (b) Repeat (a) to find P₂(x) that interpolates f(x) at x; for i = 0, 1, 2. (c) Repeat (a) to find P3(x) that interpolates f(x) at x, for i= (a) C = 0, 1, 2, 3.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Transcribed Image Text:Consider the following interpolating points for the function f(x) = x² – 2x:
Xi 01 23
f(xi) 0 -1 03
(a) Use monomial basis to find P₁(x) that interpolates f(x) at x; for i = 0,1. Con-
struct the Vandermonde matrix and then use the backslash \ in matlab to solve
the linear system.
(b) Repeat (a) to find P₂(x) that interpolates f(x) at x; for i = 0, 1, 2.
(c) Repeat (a) to find P3(x) that interpolates f(x) at x, for i = 0, 1, 2, 3.
(d) Compare P₂(x), P3(x) and f(x). What do you see? Can you explain it?
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