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.
pinnae in pigs are simply the ears.
Nares - nostrils, Pinnae - ears.
All birds have ears, none have pinnae, though some have pinnae-like head adornments.
shafts Barbules and pinnae are connected at the shafts of the feathers. This is on a bird.
Because Physics
The pinna, or outer ear, functions like a funnel to catch sounds and direct them into the middle and inner ear, respectively. If you look at the structure of the pinna, its function is pretty obvious, as its shape almost resembles a whirlpool, with the center being the ear cavity.
pinnae
pinnae
The Pinnae plant, also known as Adiantum, is a type of delicate and feathery fern with distinctive fronds that are often used in ornamental gardening. It is prized for its elegant appearance and is commonly grown as a houseplant in temperate climates. The Pinnae plant requires indirect light, high humidity, and consistently moist soil to thrive.
The Pinna/Pinnae collects the sound waves.
The external fold of the fetal pig ear is known as the pinna or auricle. It's most commonly referred to simply as the "outer ear".
Your pinnae do not funnel sounds into your ear canal from that direction.