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.
Calcaneus
The calcaneus.
The talus bone sits on the calcaneus.
The calcaneus is the name for the bone that makes the heel. It forms a large bulbous projection from the posterior and inferior part of the foot to which the calcaneal tendon (or Achilles tendon) attaches.
The calcaneus is the "heel". It is one of the tarsal bones in the foot.
The calcaneus is the "heel". It is one of the tarsal bones in the foot.
The largest tarsal bone in the human body is the calcaneus, or heel bone.
In talipes calcaneus, the foot points upward, with the heel pointing down
The Achilles tendon structure joins the gastrocnemius to the calcaneus.
A thickening on the surface of the calcaneus bone is usually a heel spur.
calcaneal
The Achilles tendon attaches the gastrocnemius muscle to the calcaneus.