• 1. arithmetic progression: 算术级数 | 等差级数 | 等值等差数列
• 2. summation of arithmetic progression: 算术级数求和
• 3. high arithmetic progression: 高阶等差级数

更多释义

• 1.What is the arithmetic progression?
  什么是算术级数？
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• 2.Prove that no four consecutive binomial coefficients can be in arithmetic progression.
  证明不存在四个连续的二项系数成算术级数。
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• 3.The result shows that the utility of the arithmetic progression can limit the first kind of misread.
  结果表明， 等差数列的利用可规范第一种误读。
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