infinitesimal calculus

Noun

uncountable

(calculus) Differential calculus and integral calculus considered together as a single subject.

Japanese Meaning

微積分学：微分法と積分法を一体として扱う数学の分野。

After studying infinitesimal calculus, he realized how seamlessly derivatives and integrals describe change and accumulation.

微分積分学を学んだ後、彼は導関数と積分が変化と蓄積をどのように滑らかに記述するかに気づいた。

Sense（1）

(calculus) Differential calculus and integral calculus considered together as a single subject.