in·te·gral cal·cu·lus
noun/ˌɪntɪɡrəl ˈkælkjələs/
/ˌɪntɪɡrəl ˈkælkjələs/
[uncountable] (mathematics)- a type of mathematics that deals with quantities that change in time. It is used to calculate a quantity between two particular moments.
积分学