noun
operational calculus
A mathematical method that treats differential operators as algebraic symbols to solve differential equations.
演算子法は微分方程式を解くための強力な手法です。
Operational calculus is a powerful technique for solving differential equations.
微分方程式 is a differential equation, while 演算子法 is a method used to solve such equations.
Compound of 演算子 (operator) + 法 (method). The term is a direct translation of the English 'operational calculus'.