**Q4: **

Which of the following functions are equal?

- A ,
- B ,
- C ,
- D ,
- E ,

**Q5: **

Given that , find the value of .

- A0
- B
- C4
- D

**Q6: **

Which of the following functions are equal?

- A ,
- B ,
- C ,
- D ,
- E ,

**Q7: **

Simplify the function .

- A
- B
- C
- D
- E

**Q8: **

Simplify the function .

- A
- B
- C
- D
- E