If A × B = {(1,1), (1,2), (1, 3), (2, 1), (2,2), (2, 3)}, then B is equal to.
{1, 2}
{1, 2, 3}
{2, 3}
None of these
The period of the function f(x) = sin3x + cos3x is
2∏
∏
2∏/3
If A = {x : x2 - 3x + 2 = 0} and R is a universal relation on A, then R is
{(1, 1), (2, 2)}
{(1, 1)}
{?}
{(1, 1), (1,2), (2,1), (2,2)}
If f(x) = 2x2 - 3x. Then the value of f(1) =
-1
1
can't be determined
Domain of √(4x - x2) is
[0,4]
(0,4)
R -(0,4)
R -[0,4]
If A = {5, 6, 7} and B = {1, 2, 3, 4}, then number of elements in set A × B × B is equal to.
36
48
16
Let A = {2, 3, 4, 5} and R = {(2, 2), (3, 3), (4, 4), (5, 5)} be a relation in A. Then R is.
Reflexive
Symmetric
Transitive
The range of the function f(x) = x - 2/2 - x, x ≠ 2 is
{1}
{-1}
Domain of the relation {(-3,1) (-1,1) (1,0) (3,0)} is
{-3,-1,-1,3}
{-3,-1,1,3}
{1,1,0}
{1,0}
Let A = {a,b,c,d}, B = {b,c,d,e}. Then n[(A × B) ∩ B × A)] is equal to
3
6
9
