Not every relation is a function. But every function is a relation. Function is just a part of relation.
The cubic function.
Range
A formula or graph are two ways to describe a math function. How a math function is described depends on the domain of the function or the complexity of the function.
The Mandelbrot graph is generated iteratively and so is a function of a function of a function ... and in that sense it is a composite function.
I consulted the gazetteer to locate a specific town in the region.
Daily Gazetteer was created in 1735.
Rawalpindi Gazetteer was created in 1895.
Gazetteer for Scotland was created in 1995.
Gazetteer of the Bombay Presidency was created in 1896.
Imperial Gazetteer of Scotland was created in 1856.
Universal Pronouncing Gazetteer was created in 18##.
The Imperial Gazetteer of India was created in 1869.
A gazetteer is a geographical dictionary or directory used to locate places.
Living Greyhawk Gazetteer was created in 2000-11.
Living Greyhawk Gazetteer has 192 pages.
a gazetteer is a geographical dictionary that help you locate places discussed in a text book.