Book: RS Aggarwal - Mathematics
Chapter: 3. Functions
Subject: Maths - Class 11th
Q. No. 19 of Exercise 3F
Listen NCERT Audio Books to boost your productivity and retention power by 2X.
19
Write the domain and the range of the function,
.
(i) domain
As f(x) is a polynomial function whose domain is R except for the points where the denominator becomes 0.
Hence x≠
Domain is R-{
}
(ii) range
Let y=
Y(bx-a) = ax +b
byx -ay = ax + b
byx -ax= ay +b
x(by -a) = ay + b
x = 
x is not defined when denominator is zero.
by – a ≠ 0
y≠a/b
Range is R-{a/b}.
