IIT JEE Solved Problem Examples for Functions

IIT JEE Solved Problem Examples for Functions includes Function Solved Question with Answrs.

Function : 

Let A and B be two non-empty sets. Then a function ‘f ’ from set A to set B is a rule or method or correspondence which associates elements of set A to elements of set B such that

(i) all elements of set A are associated to elements in set B.

(ii) an element of set A is associated to a unique element in set B.

In other words, a function ‘f ’ from a set A to a set B associates each element of set A to a unique element of set B. Term such as ‘‘map’’ (or ‘‘mapping’’), ‘‘correspondence’’ are used as synonyms for ‘‘function’’. If f is a function from a set A to set B, then we write f : A ® B or A ® B, which is read as f is a function from A to B or f maps A to B. If an element a Î A is associated to an element b Î B, then b is called the ‘f-image of a’ of ‘image of a under ‘f ’or ‘the value of the function f at a’. Also, a is called the pre-image of b under the function f. We write it as b = f (a ).

Functions: IIT JEE Solved Problem Examples

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