Chapter 1: Sets, Relations and Functions - Online Test
Q1. Let X = {1, 2, 3, 4}, Y = {a, b, c, d} and f = {(1, a), (4, b), (2, c), (3, d), (2, d)}. Then f is
Answer : Option D
Explaination / Solution:
Q2. The inverse of f(x) =
Answer : Option A
Explaination / Solution:
Q3. Let f
: R → R be defined by f(x) = 1 - |x|.
Then the range of f is
Answer : Option D
Explaination / Solution:
Q4. The function f : R → R is defined by f(x) = sin x + cos x is
Answer : Option B
Explaination / Solution:
Q5. The function f : R → R is defined by f(x) = 
is
is
Answer : Option B
Explaination / Solution:
