Relations and Functions  MCQs

MCQs of Relations and Functions

Showing 141 to 145 out of 145 Questions
10 11 12 13 14 15
141.
If f : R → R, g : R → R, f(x) = 3x - 2 and g(x) = x2 + 1 then (gof -1) (2) = _____.
(a) 259
(b) 253
(c) 169
(d) 43
Answer:

Option (a)

142.
If f(x) = 2x + 2-x2 then f(x + y) + f(x - y) = _____.
(a) f(x) . f(y)
(b) 3f(x) . f(y)
(c) 2f(x) . f(y)
(d) f(x) + f(y)
Answer:

Option (c)

143.
f(x) = xx - 1, x≠ 1, then (fofo ... of 2012 times) (x) = _____.
(a) xx - 1
(b) x
(c) xx - 12012
(d) 2012xx - 1
Answer:

Option (b)

144.
If f(x) = x - 1x + 1, x≠ -1, then f(2x) =_____.
(a) f(x) + 1f(x) + 3
(b) 3 f(x) + 1f(x) + 3
(c) f(x) + 3f(x) + 1
(d) f(x) + 33 f(x) + 1
Answer:

Option (b)

145.
Define ∗ on the set of real numbers by a ∗ b = 1 + ab. Then the operation ∗ is _____.
(a) commutative but not associative.
(b) associative but not commutative.
(c) neither commutative nor associative.
(d) both commutative and associative.
Answer:

Option (a)

Showing 141 to 145 out of 145 Questions
10 11 12 13 14 15