1. What is the correct answer for this given:

2. What is the correct answer for this given:

3. What is the correct answer for this given:

• 

  9

• 

  

• 

  All of the above.

4. What is the correct answer for this given:

• 

  x csch (x⁵ )

• 

  2x csch (x)

• 

  -2x csch (x²)

5. What is the correct answer for this given:

• 

  

• 

  

• 

  None of the above.