exponential

指数関数的な

毎回同じ数を掛けることで、増える速さがますます大きくなる。

やさしい英語で： Increasing faster and faster because each new amount is multiplied by the same number.

• The bacteria showed exponential growth.
• The population grew at an exponential rate.
• Repeated doubling produces an exponential increase.

よく使う表現： exponential growth, exponential increase, exponential rate

指数の、累乗の

数の右上に小さな数を書き、同じ数をいくつ掛け合わせるか示す。

やさしい英語で： Using a small raised number to show how many times a number is multiplied by itself.

• Write the number in exponential form.
• Exponential notation makes very large numbers easier to write.
• The teacher compared ordinary numbers with exponential expressions.

よく使う表現： exponential form, exponential notation, exponential expression

急激な、飛躍的な

非常に大きい、または短時間で急激に大きくなる。

やさしい英語で： Extremely large, or becoming much larger very quickly.

• Demand showed an exponential rise.
• The team reported exponential improvements in speed.
• The singer enjoyed exponential success after her first television appearance.

類義語： enormous, dramatic, huge

よく使う表現： exponential rise, exponential demand, exponential improvement

指数関数

一定の数を底として、指数が変化する数学の関数。

やさしい英語で： A mathematical rule with a fixed number raised to a changing power.

• The graph shows an exponential.
• We fitted an exponential to the data.
• These exponentials have different bases.

類義語： exponential function

よく使う表現： an increasing exponential, a decreasing exponential, plot an exponential