Una reflexión se refiere al cambio que se hace en la matriz de la función, también la podemos llamar transformación. Para que se de una reflexión tomamos la matriz de la función ya sea f(x)=A sen (bx+c) + d,o cos en su mismo orden. Y lo que hacemos es alterar uno de los valores un ejemplo de ello si A vale 2Π podemos cambiarla a -2Π lo que significaria una reflexión en alguno de los ejes según el valor positivo o negativo que le demos a Y,que es lo mismo que decir f(x).

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In mathematics, a reflection (also spelled reflexion) is a mapping from a Euclidean space to itself that is an isometry with a hyperplane as a set of fixed points; this set is called the axis (in dimension 2) or plane (in dimension 3) of reflection. The image of a figure by a reflection is its mirror image in the axis or plane of reflection. For example the mirror image of the small Latin letter p for a reflection with respect to a vertical axis would look like q. Its image by reflection in a horizontal axis would look like b. A reflection is an involution: when applied twice in succession, every point returns to its original location, and every geometrical object is restored to its original state. The term "reflection" is sometimes used for a larger class of mappings from a Euclidean space to itself, namely the non-identity isometries that are involutions. Such isometries have a set of fixed points (the "mirror") that is an affine subspace, but is possibly smaller than a hyperplane. For instance a reflection through a point is an involutive isometry with just one fixed point; the image of the letter p under itwould look like a d. This operation is also known as a central inversion (, §7.2), and exhibits Euclidean space as a symmetric space. In a Euclidean vector space, the reflection in the point situated at the origin is the same as vector negation. Other examples include reflections in a line in three-dimensional space. Typically, however, unqualified use of the term "reflection" means reflection in a hyperplane. A figure that does not change upon undergoing a reflection is said to have reflectional symmetry. Some mathematicians use "flip" as a synonym for "reflection".

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