Nos permitimos recordar la fórmula de integración por partes:  

                    1.-                                                               7.- 
 

                    2.-                                                              8.- 
 

                    3.-                                                           9.- 
 

                    4.-                                                              10.- 
 

                    5.-                                                  11.- 
 

                    6.-                                                          12.-