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Question

what is into function , many to one function ,one -one function

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INTOFUNCTION:Afunctionf:AB is an into function if there exists an element in B having no pre-image in A. In other words,f:AB is an into function if it is not an onto function.MANY-ONE FUNCTION:A function is said to be a many-one functionif two or more elements of set A have the same image in B. In other words,f:AB is a many-one function if it is not a one-one function.ONE-ONE FUNCTION:A function is said to be onon if differentelements of A have different images in B.Thus, f is one-oneabf(a)≠f(b)for all a,bAf(a)=f(b)⇒a=b for all a,bA

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