Written Examination for iut pre-Univ


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3-IUT Pre univ Exam Math 16-06-12


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Written  Examination  for  IUT  Pre-Univ.

Mathematics

◦ Each  question  is  worth  points  displayed  next  to  the  problem  number.

◦ You  may  use  the  extra  page  attached  to  the  end  as  a  scratch  paper.   

  Write  down  the  answer  for  each  of 

the  problems  in  the  simplest  possible  form.

1. [4  points]

Find  the  value  of    



  when    



 .



Answer  [                                                    ] 

2. [4  points]

Evaluate  





.



Answer  [                                                    ] 

3. [4  points]

Suppose  that  the  quadratic  equation



   

       has  only  one  root.



Find  the  value  of  the  constant  .

Answer  [                                                    ] 

4. [4  points]

Evaluate  log

  log






.

Answer  [                                                    ] 



5. [4  points]

Suppose 


that 



 



is 

sequence 



such 

that 




  




 

.  Find  the  value  of  





.

Answer  [                                                    ] 



6. [4  points]

Find  the  sum  of  all  entries  of  the  matrix 

  where 


 



 

 


  



 

.

Answer  [                                                    ] 



7. [5  points]

Evaluate 

  


log






  

.

Answer  [                                                    ] 



8. [5  points]

Suppose  that  cos    



  and      



.  Find 



the  value  of  sin





.

Answer  [                                                    ] 



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9. [5  points]

Evaluate 

lim


→ ∞

  



  



  when    is  a  constant  such  that 

    .

Answer  [                                                    ] 

10. [5  points]

Suppose  that  the  function     





    

  

 ≤ 


  is 

continuous  at    .

Find  the  value  of  the  constant  .

Answer  [                                                    ] 

11. [5  points]

Evaluate 

lim

 → 


sin  

 cos

.

Answer  [                                                    ] 



12. [5  points]

Suppose  that 

lim

→ 




 

   

 .  Evaluate 

lim


→ 



  

.

Answer  [                                                    ] 



13. [5  points]

Find  the  area  enclosed  by  the   -axis  and     sin 

( ≤  ≤  ).

Answer  [                                                    ] 

14. [5  points]

Let        be  the  tangent  line  to  the  curve 

    

  at    .  Find  the  values  of  the 



constants    and  .

Answer  [                                                    ] 

15. [6  points]

Find  the  derivative  ′ 



  where 



   



    



sin  

  for   ≥ .

Answer  [                                                    ] 

16. [6  points]

Let     





sin 



 ≠ 



  


.    Find  the  derivative 

of      at    .

Answer  [                                                    ] 

17. [6  points]

Evaluate 

lim


 → ∞



  





 


.



Answer  [                                                    ] 

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18. [6  points]

Suppose  that  a  function      satisfies  the  relation 





     

   for  every  real  number  . 



Evaluate   ′  .

Answer  [                                                    ] 

19. [6  points]

Find  the  derivative 







  in  terms  of     when 



 





 .

Answer  [                                                    ] 

20. [6  points]

Suppose  that     is  differentiable  on  the  set  of  real 

numbers.  Evaluate 

    in  terms  of    when 

      



     

for 


every 

  


and 

     ′  .

Answer  [                                                    ] 


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