difference quotient

(redirected from Newton's difference quotient)

difference quotient

[′dif·rəns ‚kwō·shənt]
(mathematics)
The increment of the value of a function divided by the increment of the independent variable; for the function y = ƒ(x), it is Δ yx = [ƒ(x + Δ x) - ƒ(x)]Δ x, where Δ x and Δ y are the increments of x and y.