RS Aggarwal - Mathematics

Book: RS Aggarwal - Mathematics

Chapter: 3. Functions

Subject: Maths - Class 11th

Q. No. 7 of Exercise 3C

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Find the domain and the range of each of the following real function: f(x) =

Given: f(x) =

Need to find: Where the functions are defined.

Let, ---- (1)

The condition for the function to be defined,

So, the domain of the function is the set of all the real numbers greater than .

The domain of the function, Df(x) = (, ∞).

Now putting any value of x within the domain set we get the value of the function always a fraction whose denominator is not equals to 0.

The range of the function, Rf(x) = (0, 1).

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