What is the difference between image and preimage?

An image is an artifact that depicts visual perception, such as a photograph or other two-dimensional picture, that resembles a subject, and thus provides a depiction of it.An image is a distribution of color.

The set of elements that are mapped into a subset of the codomain is given a function.

Under the function f, there is a pre image of 4, 9.

A file with all the information needed to make a live copy.You can see disk image, executable image and image copy.

A characteristic of a person, group or company is how one is perceived by others.

A visible impression can be obtained by using a camera, telescope, microscope, or other device.

An optical appearance is created by light reflected in a mirror or through a lens.

An imitation, representation, or similitude of any person, thing or act, sculptured, drawn, painted or otherwise made visible to the sight; a visible presentation.

A picture, example, or illustration, often taken from sensible objects, is used to illustrate a subject.

The figure or picture of any object formed at the focus of a lens or mirror, by rays of light from the several points of the object symmetrically refracted or reflected to corresponding points in such focus, can be seen on a screen, a photographic plate, or the eye.