Maclaurin series
Keywords
Maclaurin series | マクローリン級数 | 매클로린 급수 | 麦克劳林级数 |
Taylor series | テイラー級数 | 테일러 급수 | 泰勒级数 |
Function approximation | 関数近似 | 함수 근사 | 函数近似 |
Series expansions | 級数展開 | 급수 전개 | 级数展开 |
Polynomial | 多項式 | 다항식 | 多项式 |
Factorial | 階乗 | 팩토리얼 | 阶乘 |
Infinite series | 無限級数 | 무한 급수 | 无限级数 |
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Inquiry questions
Factual Inquiry Questions | Conceptual Inquiry Questions | Debatable Inquiry Questions |
What is the Maclaurin series, and how is it defined for a function? | Why is the Maclaurin series considered a special case of the Taylor series? | Is the Maclaurin series more practical for computational purposes than other forms of series expansions? Why or why not? |
Can you list the Maclaurin series for basic functions like , , and ? | How does the Maclaurin series help in approximating functions near the point ? | Can the limitations of the Maclaurin series in approximating functions over a wide range be effectively mitigated? If so, how? |
How might the understanding and application of the Maclaurin series change with further advancements in mathematical theory and computational technology? |
The Maclaurin Series Mystery
Exploration Title: The Maclaurin Series Mystery
Objective:
Delve into the infinite realms of calculus by decoding the Maclaurin series. Transform functions into their power series form, and predict the shape of curves with nothing but coefficients!
Mission Steps:
1. Series Start-up:
- Identify the pattern in the derivatives of the sine function and how these are used in the Maclaurin series.
- Calculate the first four non-zero terms of the Maclaurin series for cos(x).
2. Polynomial Probing:
- Use the Maclaurin series to approximate sin(x) and cos(x) to the 4th order. Graph these approximations and the original functions to compare their accuracy.
3. Factorial Fun:
- Notice the factorial in the Maclaurin series. Discuss why factorials are used and the impact they have on the function as n increases.
Questions for Investigation:
1. Application Adventure:
- How do Maclaurin series help us in real-world calculations, like those used in engineering or physics?
2. Convergence Challenge:
- For which values of x does the series for sin(x) converge quickly to the actual value? Set up a graph to test your hypothesis.
3. Trig Transformation:
- Can you derive the Maclaurin series for tan(x) using the series for sin(x) and cos(x)?
4. Creative Coefficients:
- Create a new function by altering the coefficients of the Maclaurin series for sin(x). What does the graph of this new function look like?
Engagement Activities:
- "Series Showdown": Compete to see who can calculate higher orders of Maclaurin series the fastest.
- "Graph Guessing Game": Given a series expansion, guess the original function and graph it to see if you're correct.
Through this investigation, uncover the magic of infinite series and their power to unveil the continuous nature of the universe, one coefficient at a time.
Part 2 - Further examples and explanation
Watch the below video
If you want to see graphically what is happening in the video for y=e^(2x), you can try it in the applet above exp(2x) as the function.