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simultaneous equations

quadratic equation

① 未知関数とその導関数からなる方程式。

① 未知関数の偏微分を含む微分方程式。

linear equation

algebraic equation

quintic equation

equation of motion

to derive a formula

wave equation

higher-degree equation; equation of higher degree; higher equation

Maxwell's equations

hypercomplex equation; plural equation

irrational equation

① 化学反応式。

functional equation

linear equation

member of an equation

difference equation

integral equation

equation with two unknowns

indeterminate equation

Schrödinger equation

Poisson's equation

binomial equation

system of equations

governing equation