If f(x) = 3x, g(x) = x + 1, then fog is
3x + 1
x + 3
3x + 3
3x
Which of the following is a null set ?
{0}
{x:x>0 or x
{x:x2 = 4 or x=3}
{x: x2 + 1 = 0, x∈R}
=
u
Both a and b
None of these
If the sets A and B are defined as A = {(x,y): y = ex , x∈R} B = { (x,y): y = x, x∈R} then
B⊆A
A⊆B
A∩B = ∅
A∪B = A
If f(x) = 3x and g(x) = 3/x then gof is
x
x/3
3/x
1/x
(A')' =
U
A
None
For any two sets A and B, then A ∩ ( AUB)' =
Φ
B
A'
If P = { x : x N and x is a prime number}, then p is
Finite
Infinite
Null set
For any two sets A and B, P ( A∩B) =
P (A)
P (B)
P (A∩B)
P (A) ∩ P (B)
B - A is defined as
{x/x∈A, x∉B}
{x/x∈B, x∉A}
{x/x∉A, x∉B}
{x/x∈B, x∈A and B}
