Respuestas

2013-03-31T23:52:30+02:00

 

A____________________B________C___________D

A------------------X---------------.B-----Y-------C---------X-Y........D

                                                  .......................X..........................

 

3/2((X+Y-(X-Y))/Y

3/2((X+Y-X+Y)/Y)

3/2((2Y/Y))

(3/2)X2=3