RS Aggarwal - Mathematics

Book: RS Aggarwal - Mathematics

Chapter: 3. Functions

Subject: Maths - Class 11th

Q. No. 16 of Exercise 3F

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16

Find the range of the function, .

|x| is defined as


|x|= x; x>=0


-x; x<0


= ; x>0


= ; x<0


= 1; x >0


= -1; x<0


Hence f(x) gives output values 1 and -1 only.


Range is {1,-1}.


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