Page 705 - Handbook Of Integral Equations
P. 705

dx           1             1        1     x
                                                                      2
               37.               =            +            +    ln       .
                             2 3
                         2
                                                         2
                                                                    2
                                     2
                                           2 2
                                       2
                                                     2
                                                  4
                       x(a + x )   4a (a + x )  2a (a + x )  2a 6  a + x 2
                          dx         1    1      x

               38.               = –   –    arctan  .
                          2
                                     2
                        2
                              2
                       x (a + x )   a x  a 3     a
                          dx         1        x        3        x

               39.               = –    –            –    arctan  .
                                     4
                              2 2
                          2
                       x (a + x )   a x   2a (a + x )  2a 5     a
                        2
                                                  2
                                              2
                                            4
                          dx          1         1        1     x
                                                                2
               40.               = –      –           –    ln      .
                                                    2
                                      4 2
                                                2
                                              4
                              2 2
                        3
                                                              2
                          2
                       x (a + x )   2a x    2a (a + x )  a 6  a + x 2
                          dx         1         x           7x       15       x

               41.               = –    –            –            –    arctan  .
                                                         6
                                              2
                                                                2
                        2
                                                            2
                                            4
                          2
                              2 3
                                     6
                                                  2 2
                       x (a + x )   a x   4a (a + x )  8a (a + x )  8a 7     a
                          dx          1         1           1         3     x
                                                                             2
               42.               = –      –          –             –    ln       .
                          2
                                             6
                                      6 2
                              2 3
                        3
                                                            2
                                                         4
                                                   2
                                               2
                                                                           2
                                                                2 2
                       x (a + x )   2a x    a (a + x )  4a (a + x )  2a 8  a + x 2
                                          2
                                     2
                 Integrals containing a – x .
                        dx      1

               43.           =       a + x    .
                        2
                       a – x 2  2a  ln   a – x
                         dx           x        1

               44.             =            +        a + x    .
                                      2
                            2 2
                                   2
                                          2
                        2
                       (a – x )  2a (a – x )  4a 3  ln   a – x

                         dx           x           3x         3
               45.             =             +           +      ln    a + x    .
                       (a – x )  4a (a – x )   8a (a – x )  16a 5  a – x
                                                       2
                                          2 2
                            2 3
                                                 4
                                   2
                        2
                                      2
                                                   2
                          dx             x        2n – 1     dx

               46.               =              +                  ;  n =1, 2, ...
                            2 n+1
                                                                2 n
                                      2
                                                            2
                                         2
                        2
                                             2 n
                       (a – x )    2na (a – x )   2na 2   (a – x )
                        xdx     1    2   2

               47.           = –  ln |a – x |.
                        2
                       a – x 2  2
                         xdx         1

               48.             =          .
                                    2
                        2
                                        2
                            2 2
                       (a – x )  2(a – x )
                         xdx         1

               49.             =          .
                                        2 2
                        2
                            2 3
                                    2
                       (a – x )  4(a – x )
                          xdx           1

               50.               =         2 n  ;  n =1, 2, ...
                            2 n+1
                                       2
                       (a – x )    2n(a – x )
                        2
                       x dx        a
                        2
               51.           = –x +      a + x    .
                        2
                       a – x 2     2  ln   a – x
                         2
                        x dx         x      1
               52.             =          –    ln    a + x    .
                        2
                                        2
                                    2
                            2 2
                       (a – x )  2(a – x )  4a   a – x
                        x dx         x           x        1
                         2
               53.             =           –           –         a + x    .
                                               2
                                                 2
                                        2 2
                                                     2
                                    2
                            2 3
                        2
                       (a – x )  4(a – x )   8a (a – x )  16a 3  ln   a – x
                         x dx           x        1      dx
                          2
               54.               =            –               ;  n =1, 2, ...
                                                           2 n
                                                       2
                            2 n+1
                                           2 n
                                       2
                        2
                       (a – x )    2n(a – x )   2n   (a – x )
                        3        2    2
                       x dx     x    a     2  2
               55.           = –   –   ln |a – x |.
                        2
                       a – x 2   2   2
                         3           2
                        x dx        a       1    2   2
               56.             =          +   ln |a – x |.
                                    2
                        2
                            2 2
                                        2
                       (a – x )  2(a – x )  2
                          3                                 2
                         x dx              1               a
               57.               = –                 +           ;  n =2, 3, ...
                                                              2 n
                                                           2
                                            2
                       (a – x )     2(n – 1)(a – x )   2n(a – x )
                            2 n+1
                        2
                                                2 n–1
                          dx       1      x
                                           2
               58.              =              .

                         2
                             2
                                         2
                       x(a – x )  2a 2  ln   a – x 2
                 © 1998 by CRC Press LLC
               © 1998 by CRC Press LLC
                                                                                                             Page 689
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