Define function in physical life?

Question

define function in physical life that examples should greatly help in clarify all parts of functions definition

Answer 1

Everything is a function of some other thing..........and mathematicians are still going on discovering more relationships.......

See.......I am trying to give you a very common everyday life example

You eat to have good health......now your health is a function of the amount of your food intake and it's a complex function...Why?

Because.......if you eat to a certain amount...you shall have a good health but if you eat more/less you shall have bad health(either being fat/thin and thus reducing woking capability)

Again health not only depends upon, the amount of food intake, it depends upon the physical workout, mental stability, pollution free environment etc. etc.

So you can say health(h) is a function of food intake(i), physical/mental excercise(j), mental stability(k), pollution in environment(l)....and so on

thus mathematically saying

h= f(i, j, k, l, .............)

well...........still no such law has been confidently derived by Biologists so far, I think.

I hope...I helped a bit