plural of net ionic equation

plural of Pell-Fermat equation

(exobiology) A formula for calculating the probability of civilizations existing elsewhere in the Milky Way galaxy and of their ability to communicate with Earth.

(algebra) A mathematical equation in which one or both sides is an algebraic expression, such as 2x + 7y = 3.

(algebra) Any algebraic equation in which one or both sides are in the form of a polynomial.

(chemistry) a symbolic representation of a chemical reaction; reactants are represented on the left, and products on the right

(number theory) The Diophantine equation x²-my²=1 for a given integer m, to be solved in integers x and y.

(mathematics) a set of equations that defines the coordinates of the dependent variables (x, y and z) of a curve or surface in terms of one or more independent variables or parameters

(mathematics) An equation involving a function f(x) and integrals of that function to be solved for f(x)

(astronomy, celestial mechanics) the mathematical relationship between the mean anomaly (M) and the eccentric anomaly (E) of a planet in an elliptical orbit with eccentricity (𝜀). M=E-𝜀· sin (E).