English Dictionary

rule of three

固有名詞

修辞法

(mathematics education) A rule stating that, if two ratios are equal, then the denominator of the second equals its numerator times the reciprocal of the first ratio: if a/b=c/d then d=(bc)/a.

日本語の意味

数学教育における比例計算の一手法を指し、もしa/b = c/dという比が成立しているときに、dを(b×c)/aで求める法則、すなわち未知の値を3つの既知の値から計算する方法を意味する。

To solve the proportion homework, the teacher reminded us to apply the rule of three when two ratios are equal.

比例の宿題を解くために、先生は二つの比が等しい場合に、第二の分母が第二の分子に第一の比の逆数を掛けたものに等しくなるとする三項比例の法則を適用するよう私たちに注意した。

意味（1）

(mathematics education) A rule stating that, if two ratios are equal, then the denominator of the second equals its numerator times the reciprocal of the first ratio: if a/b=c/d then d=(bc)/a.

意味（2）

(medicine) A rule for clinical trials used for determining the rate of adverse side effects when no such side effects present during the course of the trial.

意味（3）

(writing, rhetoric) A rule which states that things which come in groups of three are inherently funnier or more effective than things which come in groups of other sizes.

意味（4）

(writing, rhetoric) Specifically, the technique of having a setup in advance, a reminder to keep it fresh in the audience's memory, and then a payoff.

意味（5）

(religion, Wicca) A religious tenet stating that the energy a person puts out into the world, positive or negative, will be returned to that person threefold.

意味（6）

(programming) A rule of thumb in the C++ programming language, stating that any class that defines a destructor, a copy constructor, or a copy assignment operator should define all three of them.

the rule of three （ canonical ）