In calculus, you learn that a Taylor polynomial of degree n about a is a polynomial of the form p(x) = a, + a,(x - a) + a,(x – a) + ..+ a,(x – a)" where a, # 0. In other words, it is a polynomial that has been expanded in terms of powers of x - a instead of pow- ers of x. Taylor polynomials are very useful for approximat- ing functions that are "well behaved" near x = a. The set B = {1, x - a, (x - a),.., (x – a)"} is a basis for P, for any real number a. (Do you see a quick way to show this? Try using Theorem 6.7.) This fact allows us to use the techniques of this section to rewrite a polynomial as a Taylor polynomial about a given a.

Linear Algebra: A Modern Introduction
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ISBN:9781285463247
Author:David Poole
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Chapter6: Vector Spaces
Section6.3: Change Of Basis
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Express p (x) = 1 + 2x - 5x2 as a Taylor polynomial about a=l.

In calculus, you learn that a Taylor polynomial of degree n
about a is a polynomial of the form
p(x) = a, + a,(x - a) + a,(x – a) + ..+ a,(x – a)"
where a, # 0. In other words, it is a polynomial that has
been expanded in terms of powers of x - a instead of pow-
ers of x. Taylor polynomials are very useful for approximat-
ing functions that are "well behaved" near x = a.
The set B = {1, x - a, (x - a),.., (x – a)"} is a basis
for P, for any real number a. (Do you see a quick way to
show this? Try using Theorem 6.7.) This fact allows us to use
the techniques of this section to rewrite a polynomial as a
Taylor polynomial about a given a.
Transcribed Image Text:In calculus, you learn that a Taylor polynomial of degree n about a is a polynomial of the form p(x) = a, + a,(x - a) + a,(x – a) + ..+ a,(x – a)" where a, # 0. In other words, it is a polynomial that has been expanded in terms of powers of x - a instead of pow- ers of x. Taylor polynomials are very useful for approximat- ing functions that are "well behaved" near x = a. The set B = {1, x - a, (x - a),.., (x – a)"} is a basis for P, for any real number a. (Do you see a quick way to show this? Try using Theorem 6.7.) This fact allows us to use the techniques of this section to rewrite a polynomial as a Taylor polynomial about a given a.
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