en.wikipedia.org/wiki/Derivative

The most common approach to turn this intuitive idea into a precise definition is to define the derivative as a limit of difference ...

tutorial.math.lamar.edu/Classes/CalcI/DefnOfDerivative.aspx

In the first section of the last chapter we saw that the computation of the slope of a tangent line, the instantaneous rate of change of a function, and the ...

www.khanacademy.org/math/ap-calculus-ab/derivative-introduction-ab/formal-definition-of-derivative-ab/v/alternate-form-of-the-derivative

Sal introduces two ways of writing the limit expression for the derivative of a ... If mathematicians until today don't know how to define a process like division by ...

www.math.ucdavis.edu/~kouba/CalcOneDIRECTORY/defderdirectory/DefDer.html

DERIVATIVES USING THE LIMIT DEFINITION. The following problems require the use of the limit definition of a derivative, which is given by.

archives.math.utk.edu/visual.calculus/2/definition.12

Objectives: Now that we have defined the derivative of a function at a point, in this tutorial, we define a function which is the derivative at all points of an interval.

www.sosmath.com/calculus/diff/der00/der00.html

The Derivative. The concept of Derivative is at the core of Calculus and modern mathematics. The definition of the derivative can be approached in two different ...

www.sosmath.com/calculus/diff/der01/der01.html

... so that we can cancel it with the "h" in the denominator! This is what you try to do whenever you are asked to compute a derivative using the limit definition.

www.merriam-webster.com/dictionary/derivative

Define derivative: a word formed from another word — derivative in a sentence.