A functional index cannot be a built-in algebraic, exponential, log, or hex function.

函数索引不能是内置的代数、指数、对数或十六进制函数。

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Mathematical equations, from simple algebraic ones to the more challenging differential equations, have allowed us to summarize an enormous amount of physical phenomena into a simple format.

数学方程，从简单的代数式到富有挑战性的困难的微分方程，这些简洁的模式都允许我们把一个巨大的物理现象纳入其中。

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The program started with near-random combinations of basic mathematical processes - addition, subtraction, multiplication, division and a few algebraic operators.

程序始于基本数学过程的随机组合——加、减、乘、除和一些代数运算。

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About an hour and a half later he was solving junior high level algebraic equations.

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He added that he wanted to see a greater emphasis on logical and mathematical thinking, and that he would like to see algebraic concepts and the beginnings of probability introduced and developed throughout the primary school.

BBC: Primary maths plan threatens 'too much too soon'