f'(x) = -2xe f"(x) = (4x² – 2)e- f(4) (x) = 4e* f(3) (x) = -4xe-" (2x² – 3) (3 –12x² + 4x*)

Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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**Calculating the Taylor Polynomials for \( e^{-x^2} \)**

The function \( f(x) = e^{-x^2} \), which is fundamental in fields such as mathematical statistics and physics, lacks a closed-form antiderivative in terms of elementary functions. Hence, it is a natural candidate for discussing Taylor polynomials as a method of approximation. Constructing a Taylor polynomial is a vital skill for performing numerical experiments on purely theoretical claims.

The first four derivatives of the function \( f(x) = e^{-x^2} \) are as follows:

\[
f'(x) = -2xe^{-x^2}
\]

\[
f''(x) = (4x^2 - 2)e^{-x^2}
\]

\[
f^{(3)}(x) = -4xe^{-x^2}(2x^2-3)
\]

\[
f^{(4)}(x) = 4e^{-x^2}(3 - 12x^2 + 4x^4)
\]

Given these derivatives, the task is to find the fourth-order Taylor polynomial \( T_4(x) \) approximating \( f(x) \) around \( x = 0 \).
Transcribed Image Text:**Calculating the Taylor Polynomials for \( e^{-x^2} \)** The function \( f(x) = e^{-x^2} \), which is fundamental in fields such as mathematical statistics and physics, lacks a closed-form antiderivative in terms of elementary functions. Hence, it is a natural candidate for discussing Taylor polynomials as a method of approximation. Constructing a Taylor polynomial is a vital skill for performing numerical experiments on purely theoretical claims. The first four derivatives of the function \( f(x) = e^{-x^2} \) are as follows: \[ f'(x) = -2xe^{-x^2} \] \[ f''(x) = (4x^2 - 2)e^{-x^2} \] \[ f^{(3)}(x) = -4xe^{-x^2}(2x^2-3) \] \[ f^{(4)}(x) = 4e^{-x^2}(3 - 12x^2 + 4x^4) \] Given these derivatives, the task is to find the fourth-order Taylor polynomial \( T_4(x) \) approximating \( f(x) \) around \( x = 0 \).
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