Consider the function f : R→ R, with f(x) cos x for all x E R. For any nЄN, let Tn be the Taylor polynomial of f around 0, of order n. = ex (a) Determine the polynomial T2(x). (b) Use Taylor's approximation theorem to estimate how well T₂ (0.1) approximates f(0.1). (Any upper bound on |T₂(0.1) – ƒ(0.1)| is acceptable, as long as it follows from a correct application of Taylor's theorem and does not involve any unknowns.)

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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Consider the function ƒ : R → R, with f(x) = eª cosx for all x € R. For any n € N, let
Tn be the Taylor polynomial of f around 0, of order n.
(a) Determine the polynomial T₂(x).
(b) Use Taylor's approximation theorem to estimate how well T₂(0.1) approximates ƒ(0.1).
(Any upper bound on |T₂(0.1) – ƒ(0.1)| is acceptable, as long as it follows from a correct
application of Taylor's theorem and does not involve any unknowns.)
Transcribed Image Text:Consider the function ƒ : R → R, with f(x) = eª cosx for all x € R. For any n € N, let Tn be the Taylor polynomial of f around 0, of order n. (a) Determine the polynomial T₂(x). (b) Use Taylor's approximation theorem to estimate how well T₂(0.1) approximates ƒ(0.1). (Any upper bound on |T₂(0.1) – ƒ(0.1)| is acceptable, as long as it follows from a correct application of Taylor's theorem and does not involve any unknowns.)
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