V2EX euler method

Euler Method

释义 Definition(中文)

欧拉方法:一种最基础的数值方法,用来近似求解常微分方程初值问题。它用“当前斜率”做一步线性外推:
若 \(y' = f(x,y)\),步长为 \(h\),则
\[ y_{n+1} = y_n + h\,f(x_n, y_n) \] 常见于入门数值分析与微分方程课程;精度较低,但概念直观、便于理解更高级方法(如 RungeKutta)。

发音 Pronunciation(IPA)

/lr mθd/

例句 Examples

Euler method is easy to implement for simple differential equations.
欧拉方法很容易用于实现简单的微分方程近似求解。

Using the Euler method with a smaller step size can reduce error, but it may still become unstable for stiff equations.
在欧拉方法中减小步长可以降低误差,但对刚性方程仍可能出现不稳定。

词源 Etymology(中文)

“Euler”来自瑞士数学家莱昂哈德欧拉(Leonhard Euler)的姓氏;“method”意为“方法”。该名称用于指代用切线斜率逐步推进的基本数值积分/解微分方程方案,因其与欧拉在微积分与微分方程发展中的奠基性影响而得名。(也常写作 Euler’s method。)

相关词 Related Words

文学与著作 Literary Works(出现示例)

  • Numerical Analysis(Richard L. Burden & J. Douglas Faires)
  • Elementary Differential Equations and Boundary Value Problems(Boyce & DiPrima)
  • A First Course in Differential Equations with Modeling Applications(Dennis G. Zill)
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