The domain of sin-1 [log3(x/3)] is
[1,9]
(-1,9)
(-9,1)
(-9,-1)
If f(x) = x2-5x+3, then f(1) =
3
1
0
-1
Given A = {x∈ N : x≤ 4} and B = {y ∈ N: 3< y ≤ 5} then n(A × A) =
4
8
16
Let X = {2,3} and Y = {1,3,5}. How many different functions are there from X into Y?
9
19
Given f: N→N, If f={(1,3) (2,5) (3,7).........} then f(x)=
2x+1
2x-1
x + 1
x-1
Which of the following function identical?
f(x) = x/x and ∅ (x) = 1
f(x) = logx2 and ∅ (x0 = 2 log x
f(x) = 1 and ∅ (x) = sin2 x + cos2 x
f(x) = x and ∅(x) = (√x)2
2x + 1
2x - 1
x - 1
f(a2)
f(a)
f(a+1)
None of these
If A = {4,5,7} B = { 2,4} and C = {2,3,7} then (A-B) x(A-C) =
{(5,4) (5,5) (7,4) (7,5)}
{(5,5) (5,6) (7,5) (7,6)}
{(4,5) (5,5) (7,3) (7,7)}
Cot θ
- Cot θ
-tan θ
- sin θ
