指数関数

しすうかんすう

noun

•

exponential function(mathematics)

指	finger, point to, indicate, put into, play (chess), measure (ruler)
数	number, strength, fate, law, figures
関	connection, barrier, gateway, involve, concerning

、

せんせい

？

こくばん

か

、

しすうかんすう

さんかくかんすう

Er, Sir? What's written on the blackboard isn't an exponential function but a trigonometric one ..