Archives des Functions

May 9, 20220Comments

The derivative of a function: definition and geometric interpretation

The derivative of a function is its instantaneous variation, i.e. the slope of the tangent to the graphical representation of the function at that point. 1. General idea: an instantaneous variation We

Functions

Geometry

January 28, 20220Comments

Drawing a circle on the plane: equation and parameters

The definition of a circle is simple: it is a set of points located at the same distance from a given point. This distance is called the radius and this

Functions

Set theory

July 17, 20210Comments

Finiteness and Mathematical Infinity : Comparing and Enumerating

A finite set is a set that can be counted using the natural numbers \(1,\ldots,n\) for a certain natural number \(n\). But what is counting ? And then, what is