Trigonometry Tables

1. Which of the following is a function?

A relation mapping one element to many outputs
A relation mapping each element to a unique output
Random mapping
None of these

2. The function f(x)=x² is:

One-to-one
Many-to-one
Onto
Both a and c

3. Domain of f(x)=√x is:

(-∞,∞)
[0,∞)
(-∞,0]
None

4. f(x)=1/x is not defined at:

x=0
x=1
x=-1
All real numbers

5. f(x)=|x| is:

Odd
Even
Both
None

6. Which function is one-to-one?

f(x)=x²
f(x)=sin x
f(x)=2x+3
f(x)=|x|

7. Range of f(x)=cos x is:

(-∞,∞)
[0,1]
[-1,1]
None

8. If f(x)=2x+1, then f(3)=?

5
7
6
8

9. If f(x)=x³, then f(-2)=?

8
-8
6
-6

10. Which is not a function?

Circle equation x²+y²=1
y=2x+1
y=x³
y=√x