! " # # $
% &
' & &( &
' ) & & ! &
* & & # ' & +
, -
!! ! & # & *# ! !! & & ' * " & & . ' * " " # /(0 . ( & * " # #$
" *
" . & & * " 1 & / 0 # # " & 2 & ! 3 4!! & , *
" ( ! . & ! & !
# ! #
. "
! * " & # *# & (&
4 & 1 1 ! & + 5-%
! 1 & & 6! 5
""
#
$
""
%
7
"
& &
' (
)
""
%
* +
)
& &
,
-
6
4
-4
-2
2
2 x
4
0
-2
-4
-6
-8
-10
-12
% 8! 20
10
-4
-2
0
2 x
4
-10
-20
% 8! 9
0.8
0.6
0.4
0.2
-4
-2
0
2 x
4
7% 8! 1
0.8
0.6
0.4
0.2
-4
-2
0
-0.2
2 x
4
-0.4
-0.6
-0.8
-1
% 8! :
.
/ 0 1
% 2 ""
&
""
/ # 32
' ( , - 4 / +
5)
-2
;
. 5 ' &
+ "- & *# . 5 !! & # *# . * " 1 & # ! # *
" * " !
* " #
& #
<6 & # " # 6! #
=
# # *# & 1 & 1 5%
%
>
! 1 & & 6! 5 ) ' 6! & %
/ 2 %
"
6
"
"
"
&
4 7
10
8
6
4
2
-3
-2
-1
0
-2
1
x
2
3
-4
-6
-8
-10
9% 8! 10
8
6
4
2
-3
-2
-1
0
-2
1
x 2
3
-4
-6
-8
-10
:% 8! ! 0
* "
6
8 &
9 :
0.98
0.96
0.94
0.92
0.9
0.88
-4
-2
0
2 x
4
;% 8! 0.8
0.6
0.4
0.2
-4
-2
0
-0.2
2 x
4
-0.4
-0.6
-0.8
=% 8! " .
/ 2 ""
& ""
'
(
,
-
4
7
.
!
.
!
0
; "
)
6
"
"
+-
"
& )
# .
"
/ /'22 / "
"
< 2
.
;
)
"
""
# $% &
. 5 ! & ?6! * ) ! & & !@
!# , ! + & &
!- # ! ) & & & & !! !@
!
' ( & < /
2 ', /
'== 2 6 >
9
/ 2 / 2
6
', "
)
"
/2 + $
"
:
/ "
2 " <
" " ) " # &
?
80
60
S
40
20
0
1
2
r
3
4
5
>% 8! &
? 6
"
""
6
"
6
"
%" @ "
;
* @ /(2 6
)
* & < : '( /%
2 6 "
>
/ 2 "
=
6
"
" . 5)
'' ""
6
"
"
6
"
%
"
1 @ "
#
"
>
"
"
. "
# ' < 9 @
/ '7= 2 "
"
#
$ / 2 > /<
A "
2
( < (= 6 >
, % "
"
@ - < (= )
"
6 >
4 < : - 6
"
>
7 < ,= '= /
" '= 2
< )
"
B >/%
2
9 & "
0 "
>