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.
In xanthophyll there are 3.
carotene and xanthophyll absorb blue green light while chlorophyll absorbs all other colors of light in the spectrum. Once carotene and xanthophyll have absorbed light, they transfer the light energy to chlorophyll.
A xanthophyll is a derivative of a type of carotene, a plant pigment commonly yellow in colour.
These are carotenoids
Chlorophyll is not present in high amounts during the fall. The leaves do not have a mask of chlorophyll allowing the xanthophyll to absorb light that is not captured by chlorophyll. This lets the xanthophyll give a yellow color to the leaves in the fall.
Xanthophyll
Xanthophyll's are usually what create yellow pigments in leaves. They do not require light for synthesis, so they are present in all young leaves as well as in etiolated leaves.
xanthophyll
Chlorophyll a & b Carotene and Xanthophyll
yellow
Photosynthetic pigment consisting of chlorophyll a & b, carotene and xanthophyll.
carotene - 0.98 chlorophyll a - 0.59 chlorophyll b - 0.42 pheophytin - 0.81 xanthophyll 1 - 0.28 xanthophyll 2 - 0.15 everything is in percentages