RS Aggarwal - Mathematics

Book: RS Aggarwal - Mathematics

Chapter: 3. Functions

Subject: Maths - Class 11th

Q. No. 17 of Exercise 3F

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17

Find the domain of the function, f(x) = log |x|.

log x function has domain .


When x is replaced by |x|, the function f shows value as


f(x) = log(x); x>0


= log(-x); x<0


Hence in the function x cannot be zero as log function is not defined for x=0.


Domain of f(x) is R – {0}


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