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Form Five                                                                                                                                          Form Five


                                                         ∫
          Integrals of logarithmic functions of the form  log ax dx , where a
          is a constant.
          Teaching steps
             1.  Guide students through discussion to recognize  integrals of
          3.    FOR ONLINE READING ONLY
                 this form where a is a constant.

             2.  Assist students through discussion to solve integral of the
                       ∫
                                 ,
                 form:  log ax dx where a is a constant.
             3.  Use Examples 9.58 and 9.59 in the Student’s Book to guide
                 students to solve integrals of logarithmic  functions.  Allow
                 students to share alternative methods of solving integrals of
                 logarithmic functions.
             4.  Engage  students  in  groups  to  use  scientific  calculators  and
                 mathematical  softwares to verify  the  solutions  of  Examples
                 9.58 and 9.59 in the Student’s Book. Advise them to share their
                 findings through presentation or gallery walk.
             5.  Direct students to attempt Exercise 9.11 in the Student’s Book.
                 Advise them to submit their  work. Check the correctness
                 of their answers, and provide them constructive  feedback.
                 Encourage  students  to  explore  additional  resources, such as
                 online tutorials, Symbolab, Mathematica, or reference books,
                 to enrich their understanding and for further practice.


          Answers to Exercise 9.11

               7 x                     x 2                  − 1
          1.        c +         4.    −    +  c        7.        + c
              ln7                     ln10                 4 ln 4
                                                            x
              (ln )x  2              3 2x                   9 −  37x−
          2.         + c        5.       + c           8.        + c
               2ln10                2ln3                   7ln9
               8 x  +  c              6 12y−              10 x− 1

               ln 2             6.    −  2ln 6  +  c     9.    ln10  + c


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         Mathematics for Advanced Secondary Schools



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