Under the same hypotheses as exercise 11, show that the Taylor expansion of f.g at 2o is obtained by taking Tn(f, xo, x)T,(g, xo, r) and retaining only the powers of (x – xo) up ton.

Linear Algebra: A Modern Introduction
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ISBN:9781285463247
Author:David Poole
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Chapter7: Distance And Approximation
Section7.2: Norms And Distance Functions
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11. Suppose f and g are C" functions with Taylor expansions denoted
Ta(f, xo, x) and Tn(g, xo, x). Prove that T,(f, xo, x)+ T,(9, x0, x)
is the Taylor expansion of f +g at to.
12. Under the same hypotheses as exercise 11, show that the Taylor
expansion of f.g at 1o is obtained by taking T,(f, ¤o, x)T, (9, xo, x)
and retaining only the powers of (x – ro) up to n.
Transcribed Image Text:11. Suppose f and g are C" functions with Taylor expansions denoted Ta(f, xo, x) and Tn(g, xo, x). Prove that T,(f, xo, x)+ T,(9, x0, x) is the Taylor expansion of f +g at to. 12. Under the same hypotheses as exercise 11, show that the Taylor expansion of f.g at 1o is obtained by taking T,(f, ¤o, x)T, (9, xo, x) and retaining only the powers of (x – ro) up to n.
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