X'0, X1,* , Xn E (a, b) are arbitrary points such that x; # x; for i # j. Fur- thermore, let P be a polynomial of degree n such that P(x;) = f(x;) for all i = 0, 1, · .. ,n. Prove that for every x E (a, b) there exists ( such that min{x, xo, x1, .. , Xn} < $ < max{x, xo, x1, , xn}, and %3D f(n+1)(C) f(x) – P(x) = (x – xo)(x – x1) ·.· (x – xn). (n + 1)! | | Hint: Fix x, and denote by M the number that satisfies the equation M ;(x – xo)(x – x1) · · (x – xn). (n + 1)! f(x) – P(x) : %3D ...
X'0, X1,* , Xn E (a, b) are arbitrary points such that x; # x; for i # j. Fur- thermore, let P be a polynomial of degree n such that P(x;) = f(x;) for all i = 0, 1, · .. ,n. Prove that for every x E (a, b) there exists ( such that min{x, xo, x1, .. , Xn} < $ < max{x, xo, x1, , xn}, and %3D f(n+1)(C) f(x) – P(x) = (x – xo)(x – x1) ·.· (x – xn). (n + 1)! | | Hint: Fix x, and denote by M the number that satisfies the equation M ;(x – xo)(x – x1) · · (x – xn). (n + 1)! f(x) – P(x) : %3D ...
Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter8: Polynomials
Section8.1: Polynomials Over A Ring
Problem 24E
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