電位、電圧計、電圧の測定 電流、交流、直流、電流計、電流の測定 電気抵抗、電気抵抗の測定 電力、電力計、電力の測定 ベクトル解析 商用電源、世界の商用電源一覧 (電圧・周波数・プラグ、英文:en:Mains power around the world) 感電 電気化学ポテンシャル オームの法則 開放電圧、電圧降下
x と y が正比例し、比例係数は k とする。 x と y の比(商)は一定である。(定義) x が a 倍になれば、y も a 倍になる。(必要十分条件) 正比例という関係は一次関数の特殊な場合である。特に直交座標を取ってグラフにすれば、そのグラフは原点を通過する直線を描く。 xとyの相互相関係数は、比例係数の符号()に等しい。 x が a 増えれば、y は ka 増える。
The P versus NP problem is to determine whether every language accepted by some nondeterministic algorithm in polynomial time is also accepted by some (deterministic) algorithm in polynomial time.
未解決問題 computer model in computability theory is the Turing machine, introduced by Alan Turing in 1936 [Tur36]. Although the model was introduced before physical computers were built, it nevertheless continues to be accepted as the proper computer model for the purpose of defining the notion of computable function.
Anne : I'm glad to hear that. In our country, you can take a dog on a bus, too, but on trains and buses, you must keep your dog on a lead. Junko : I see. Well, that dog over there is calm beside its owner. Probably the owner trained her dog very well. Anne : (C) Owners usually train their dogs well. Dogs are very popular among people in Britain. We often say, "A dog is our best (D) and we're their best friend. Junko : That's interesting