TatoebamookeeeCC BY 2.0 FRあのー、先生?黒板に書いてあるの、指数関数じゃなくて三角関数ですけど・・・。英語の訳Er, Sir? What's written on the blackboard isn't an exponential function but a trigonometric one ...出典: Tatoeba文番号 76905