$ perl 979790.pl
Wide character in syswrite at /usr/local/share/perl/5.10.1/PDF/Reuse.pm line 977, <FILE> line 212.

##</code><code>##

#!/usr/bin/perl
use strict;
use warnings;
use utf8;
use PDF::API2;

my $content='&#8750; E&#8901;da = Q, roboticus n &#8594; &#8734;, &#8721; f(i) = &#8719; g(i)';

my $pdf = PDF::API2->new();
my $page = $pdf->page();
$page->mediabox('Letter');
my $font = $pdf->ttfont('/usr/share/cups/fonts/FreeMono.ttf', -encoding=>'utf-8');
my $text = $page->text();
$text->font($font, 20);
$text->translate(15,15);
$text->text($content);
$pdf->saveas('test_603.pdf');

##</code><code>##

$ perl --version

This is perl, v5.10.1 (*) built for i486-linux-gnu-thread-multi

Linux Boink 2.6.32-39-generic #86-Ubuntu SMP Mon Feb 13 21:47:32 UTC 2012 i686 GNU/Linux

PDF::API2       2.019
Adobe Reader    9.3.2 04/01/2010