i*x);
                                  a d - b c
(%o1)                sin(%pi x) + ---------
                                      2
                                     h
(%i2) dpart (dpart (expr, 1, 1), 2, 2);
                        &quot;&quot;&quot;&quot;&quot;&quot;&quot;    a d - b c
(%o2)               sin(&quot;%pi x&quot;) + ---------
                        &quot;&quot;&quot;&quot;&quot;&quot;&quot;      &quot;&quot;&quot;&quot;
                                     &quot; 2&quot;
               