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本章大綱 9.1 Sequence數列 9.2 Infinite Series無窮級數
9.3 Tests for Convergence審斂法 9.4 Power Series, Maclaurin Series, Taylor Series冪級數、 麥可勞林級數和泰勒級數 9.5 Taylor and Maclaurin Series 泰勒級數與麥克勞林級數
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Sequence 數列 例:
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9.1.2 The Limit of a Sequence數列的極限
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9.1.3 Limit laws for sequences
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9.1.4 Theorem 例題1. Calculate 解:
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9.1.5 The squeeze theorem for sequence 夾擠定理
例題2. Discuss the convergence of the sequence 解:
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例題3. For what values of is the sequence convergent. 解:
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9.1.6 Monotonic Sequences單調數列
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9.1.7 Bounded Sequence 有界數列
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例題4. Show that the sequence is convergent. 證明:
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9.1.8 Theorems
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證明:
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例題5. Find 解:
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9.1.9四個重要的極限 證明:
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9.1.10 Theorem 例題6. convergent or divergent. 解:
Determine whether the sequence is convergent or divergent. 解:
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Infinite Series 無窮級數 Series
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例題1. Geometrie Series 幾何級數 解:
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例題2. Find the sum of the geometric series 解:
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例題3. Is the series convergent or divergent? 解:
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例題4. Write the number as a ratio of integers. 解:
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例題5. Telescoping Series疊進級數 解:
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例題6. Harmonic Series調和級數 解:
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Theorem
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Theorem 級數收斂的必要條件: 證明:
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9.2.4 The Test for Divergence
例題7. 利用 test 知 解:
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例題8. 例題8. Find the sum of the series Find the sum of the series 解:
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9.3 Tests for Convergence審斂法
9.3.1 The Integral Test 積分審斂法
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證明:
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例題1. Prove that p-series is convergent if and divergent if 證明:
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例題2. Determine whether the series converges or diverges. 解:
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9.3.2 The Comparison Test比較審斂法
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證明: 註:
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例題3. 解: Determine whether the series converges or diverges.
(1) (2) (3) 解:
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9.3.3 The Limit Comparison Test
極限比較審斂法
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證明:
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例題4. Test the series for convergence or divergence. (1) (2) 解:
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註:
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9.3.4 The Ratio Test 比值審斂法
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證明:
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例題5. Test the series for convergence or divergence. (1) (2) 解:
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9.3.5 The Root Test 根值審斂法
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例題6. 解: Which of the following series converges, and which diverges?
(1) (2) 解:
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9.3.6 The Alternating Series Test
交錯級數審斂法
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證明:
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例題7.
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例題8. Test for convergence or divergence. 解:
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9.3.7 Absolutely Convergent 絕對收斂
證明:
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註:
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例題9. Test the series for convergence or divergence. (1) (2) 解:
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9.4 Power Series, Maclaurin Series, Taylor Series 冪級數、麥可勞林級數和泰勒級數
冪級數不但是形式簡單,而且在其收斂區間內可以像對多項式一般對它進行各種運算。因此,將一個函數表示成冪級數,對於研究函數的性質有著重要的意義。
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9.4.1 Power Series 冪級數
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例題1. 解: For what values of x do the following power series converge ?
(1) (2) (3) 解:
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9.4.2 The Convergence Theorem for Power Series
證明:
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9.4.3 Radius of Convergence收斂半徑
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例題2. 解: Find the radius and the interval of convergence of the series.
(1) (2) (3) 解:
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例題3. 解: Find the radius and the interval of convergence of the series.
(1) (2) 解:
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9.5 Taylor and Maclaurin Series 泰勒級數與麥克勞林級數
9.5.1 The Representation of a Function as a Power Series
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例題1. Find a power series representation for the function. (3) 解:
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Theorem
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例題2. Find a power series representation for the function 解:
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9.5.2 Taylor series and Maclaurin series
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例題3. 解:
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例題4. Find the Taylor series of and its radius of convergence. 解:
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9.5.3 Taylor’s Theorem 泰勒定理 註:
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Taylor’s Formula 泰勒公式
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證明:
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9.5.4 The Remainder Estimation Theorem
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例題5. Find the Maclaurin series for and its radius of convergence. 解:
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例題6. Find the Maclaurin series of and its radius of convergence. 說明:
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解:
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例題7. Find the Maclaurin series of and its radius of convergence. 說明:
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解:
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例題8. Find the Maclaurin series of and its radius of convergence. 解:
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9.5.5 泰勒餘式定理的應用 例題9. 解:
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Evaluate correct to within an error of 0.001.
例題10. Evaluate correct to within an error of 解:
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