Page 71 - DIGITAL BOOK MUHAMMAD AZWARDI NASUTION
P. 71

Definition of Infinite geometric series




       Geometric series is called convergent


                                 
              if r       1  and a      0


                                                  a

                             S =

                                 ~
                                             1    −     r









        Geometric series is called divergent




                                  a
               if r       1  and        0



                              S   ~          ~   =
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