which is true
f-1(x) = f(x)
f-1(x) = -f(x)
f(f(x)) = -x
f-1(x) = -1/19 f(x)
If f(x) = 2x , then f(0), f(1), f(2), ..... are in _____.
Arithmetic Progression
Geometric Progression
Harmonic Progression
Arbitrary
If a set A contains 5 elements and B contains 4 elements, then the number of elements in A * B is ________.
9
20
5
4
If (a,b) = (2,3), then a = _____ and b = ______ .
3,2
2,3
0,2
5,3
__________.
If f(x) = x2 - x-2 , then f(1/x) is equal to _____.
f(x)
-f(x)
-1/f(x)
(f(x))2
1
3
2
If A = { 1,2 } and B = { 3,4 } then A * B =
{ ( 1,3 ), ( 2,4 ) }
{ ( 3,1 ), ( 4,2 ) }
{ ( 1,2 ), ( 3,4 ) }
{ ( 1,3 ), ( 1,4 ), ( 2,3 ), ( 2,4 ) }
2(f(2))
f(2)
-f(2)
1/2 f(2)
If x = { 1, 2, 3, 4 } , then one-one , onto mappings f : x → x such that f(1) = 1, f(2) ≠ 2 and f(4) ≠ 4 are given by ____.
{ ( 1, 1 ), ( 2, 4 ), ( 3, 2 ), ( 4, 3 ) }
{ ( 1, 2 ), ( 2, 4 ), ( 3, 3 ), ( 4, 2 ) }
{ ( 1, 2 ), ( 2, 4 ), ( 3, 2 ), ( 4, 3 ) }
None of these
