1 by DikaAziz

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                                ln( x  3)
                    f ( x)                                0;                       f
                                  x3
     f                                          0;                             f                 1
                                                                                                
                                 n1
                      un  
                                n
                                       f ( x)dx                       u n  n 0                     2

           f (n  1)  f ( x)  f (n)                       n  x  n 1                         (a
                        n                                        un                              (b
                                 f (n  1)  un  f (n)

                                                             un                                (c

      F ( x)  ln  x  3                          0;
                                       2
                                                                                          F         3

          F '( x)                      0;           F                                        (a
                            n
In                  I n   f ( x)dx              n                                              (b
                            0




             Sn  u0  u1    un1                   n                                              4

                                                                Sn                        Sn

								
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