5 Use the "known Taylor series" (Table 10.1) to determine the sum of the series 27 23 25 33.3 35.5 37.7 2/3 - + - +

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Chapter2: Second-order Linear Odes
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## Series and Limits

### For the next three exercises, use series to evaluate the limit.

1. \[
\lim_{{y \to 0}} \frac{{\arctan y - \sin y}}{{y^3 \cos y}}
\]

2. \[
\lim_{{h \to 0}} \frac{{(\sin h)/h - \cos h}}{{h^2}}
\]

3. \[
\lim_{{x \to \infty}} (x + 1) \sin \left( \frac{1}{{x + 1}} \right)
\]

### Additional Exercise

4. Determine a polynomial that will approximate

\[
F(x) = \int_{0}^{x} \arctan t \, dt
\]

throughout the interval \([0, 0.5]\) with an error of magnitude less than \(10^{-3}\).

### Taylor Series

5. Use the "known Taylor series" (Table 10.1) to determine the sum of the series

\[
\frac{2}{3} + \frac{2^3}{3^3 \cdot 3} + \frac{2^5}{3^5 \cdot 5} + \frac{2^7}{3^7 \cdot 7} + \ldots
\]
Transcribed Image Text:## Series and Limits ### For the next three exercises, use series to evaluate the limit. 1. \[ \lim_{{y \to 0}} \frac{{\arctan y - \sin y}}{{y^3 \cos y}} \] 2. \[ \lim_{{h \to 0}} \frac{{(\sin h)/h - \cos h}}{{h^2}} \] 3. \[ \lim_{{x \to \infty}} (x + 1) \sin \left( \frac{1}{{x + 1}} \right) \] ### Additional Exercise 4. Determine a polynomial that will approximate \[ F(x) = \int_{0}^{x} \arctan t \, dt \] throughout the interval \([0, 0.5]\) with an error of magnitude less than \(10^{-3}\). ### Taylor Series 5. Use the "known Taylor series" (Table 10.1) to determine the sum of the series \[ \frac{2}{3} + \frac{2^3}{3^3 \cdot 3} + \frac{2^5}{3^5 \cdot 5} + \frac{2^7}{3^7 \cdot 7} + \ldots \]
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