Which table below is a function? explain

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⇾ Now , We are given the relation in Table A and we're gonna make a mapping diagram! [ See the attached picture ]. Here , Since every element of x has unique image in B , Table A is a function.

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⇾We're gonna make a mapping diagram too here! [ See the attached picture }. Since one element ' 32 ' is associated to elements ' 35 & 12 ' of y , this is not a function.

Q. What do you mean by function ? How can we identify whether the given relation is function ?

Ans: Function is a special type of relation. Function is the refinement of relation. To be a function , In a relation from A to B, every elements of Set A should have only one ( distinct ) image in B. In other words , if no two different ordered pairs have the same first component , then it is a function.

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