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finite difference
A difference between the value of a function evaluated at a number, and the value of the same function evaluated at a different number, a fixed distance from the first.
spot the differences
make a difference
(idiomatic, intransitive) To carry out an action, the result of which is a significant change, or an altered circumstance. / (idiomatic, intransitive) To be of importance; to matter.
( present singular third-person )
( participle present )
( participle past )
( past )
common differences
difference equation
(mathematics) An equation involving an ordered sequence of real numbers (a_nₙ₌₁ ᪲) and some of its differences, where the first difference is defined as 𝛥(a_n)=a_n+1-a_n, and the kᵗʰ difference is defined recursively as 𝛥ᵏ(a_n)=𝛥ᵏ⁻¹(a_n+1)-𝛥ᵏ⁻¹(a_n),.
spot-the-difference
making a difference
difference maker
Someone who, or something that, makes a difference.