25. Let \( g(x)=p(x)+x^{n+1} f(x) \), where \( p(x) \) is a polynomial of degree at most \( n \) and \( f \) has derivatives through order \( n \). Show that \( p(x) \) is the Maclaurin polynomial of order \( n \) for \( g \).
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Conjecture Consider the function $f(x)=x^{2} e^{x} .$ (a) Find the Maclaurin polynomials $P_{2}, P_{3},$ and $P_{4}$ for $f$ . (b) Use a graphing utility to graph $f, P_{2}, P_{3},$ and $P_{4}$ . (c) Evaluate and compare the values of $f^{(n)}(0)$ and $P_{n}^{(n)}(0)$ for $n=2,3,$ and $4 .$ (d) Use the results in part (c) to make a conjecture about $\quad f^{(n)}(0)$ and $P_{n}^{(n)}(0) .$
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Taylor Polynomials and Approximations
Consider the function $f(x)=x^{2} e^{x}$. (a) Find the Maclaurin polynomials $P_{2}, P_{3}$, and $P_{4}$ for $f$. (b) Use a graphing utility to graph $f, P_{2}, P_{3}$, and $P_{4}$. (c) Evaluate and compare the values of $f^{(n)}(0)$ and $P_{n}^{(n)}(0)$ for $n=2,3$, and 4 (d) Use the results in part (c) to make a conjecture about $f^{(n)}(0)$ and $P_{n}^{(n)}(0)$.
Proof Let $P_{n}(x)$ be the $n$ th Taylor polynomial for $f$ at $c .$ Prove that $P_{n}(c)=f(c)$ and $P^{(k)}(c)=f^{(k)}(c)$ for $1 \leq k \leq n$
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