1
!"#
$%$&
%$$’(); *#(); *()
& + ,&+- "" " . ""
/) &+ 00 " 0 0 ,
1 234 - " "! 5
0 6 . 5 ) 2 & +
"" "5 "! 0 6
"" "" 5 0 5 0) + "" 6
&+ 5 5 ) +
0 0 0 6 6 7 0 & +
) / 6 0 0
" 4 00 5 " 0 6
) + " & + ,&+- "") +
0 0 " 5 ! 5 #
" 0 6 6 ) / " 7 58
/3 ,! /0 3 -8 8 "9: 8
& + " 234 1
0 )
5 6
0 0 6
" 6 06 )
/ 0 0 0 "
: 0
""
) 6 0
6 ;<)
!
/ & +
""" 0
0 )
=>’ 6 0 & + 6
00 "" 0;?<)
& 0
" "
0 0
#
6 5 0
6) 1
"
0 "
0 6 "
4 ""
0 0 0 &
+ ) 1
! 0 4
": 0 " &+ )
& + ,&+- " 0
" 0
5 5 0 5
;@<) / 0 0 &+
7
6 "")
Proceedings of the 10th WSEAS Int. Conference on MATHEMATICS and COMPUTERS in BUSINESS and ECONOMICS
ISSN: 1790-5109 181 ISBN: 978-960-474-063-5