在一开始，决策制定者就拥有一种“效用函数”或“偏好排序”把所有结果集合从最喜欢的到最不喜欢的排列起来。
At the outset, the decision-maker has a "utility function" or a "preference ordering" that ranks all sets of consequences from the most preferred to the least preferred.
它的功能还包含计算三角函数，阶乘，排列和组合的计算。
Some of the features include trigonometry, factorials, permutations and combinations.
不幸的是，没有按名称排列的简单的函数清单，文档是按主题排列的。
Unfortunately, there is no simple listing of functions by name; instead the document is arranged by topic.
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