what is functions? explain (any three)
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ANSWER
A supervisor refers to a person who directly oversees the activities of the workers. In the organisational hierarchy he lies immediately above the worker. A supervisor performs the following functions.
(i)He is in direct contact with the workers and thereby, guides and supports the workers.He also helps in maintaining harmony and unity among the workers.
(ii)He acts as a link between the manager and the workers.Through the supervisor,the management communicates the idea and policies to the workers. On the other hand,the workers are also able to communicate their problems and grievances to the management through the supervisor.
(iii)Supervisor ensures that the workers work efficiently and as per the targets to achieve the overall goals of the organisation.
Answer:
three types of functions are:-
(1) One – one function (Injective function)
(2) Many – one function
(3) Onto – function (Surjective Function)
(1) In mathematics, an injective function (also known as injection, or one-to-one function) is a function that maps distinct elements of its domain to distinct elements of its codomain. In other words, every element of the function's codomain is the image of at most one element of its domain.
(2) One-to-one and many-to-one functions
A function is said to be one-to-one if every y value has exactly one x value mapped onto it, and many-to-one if there are y values that have more than one x value mapped onto them. This graph shows a many-to-one function.
(3) In mathematics, a function f from a set X to a set Y is surjective, if for every element y in the codomain Y of f, there is at least one element x in the domain X of f such that f(x) = y. It is not required that x be unique; the function f may map one or more elements of X to the same element of Y.
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