2. 2 O b
2'U K
= 8 /Y8 U=
8 " Y K ' O
K' O O= 8 2
7 = b'7 ' 8 U= O
O KK= 22 = O
2 2'U K UYK
8 UK=
YK 8 U 2
HK'7 K 7 'U 2 O'" 2=
hh÷J Y YO 8 2
K 8 = b '> 8 i 2' KU
hHK O'> 8 ö
À
3. 8 = ! Y Y8
2 b 8 " Y K 'O7 = H KY
7 = b'7 ' 8 U= KU(OU' = J Y O
O KK= 22> ! '8 2 2 O'" 2= h'h
& OU 2 7 'U 2 O'" 2= hh÷ Y8 J Y
2= O <= O
UYb= 7 i = K ! Y Kn 8 UK
ì ôí ë i ì ôî ëö! Y Y8 7 = b'7 ' 8 U= J Y
2'8 > 7 O & ( 2
H (O O÷ = 8
8 H KZ O '8
2'U K UYK H= U'
O
'O 'H2'8
J Y 8 = UK= O
8 UK> 8 = UK O
O K U'b Oö
ó
9. O K K & 7 b 22 /=
7 8 = n O = 8 O' K =
= 7 =
" K 8
Y8 =
O H=
2= O 7
U O J Y & i
O
= 2 U'8 = 7 K' ÷ Yi
= K O = / U=
OUY '= 8 Y8 'b KO' O
8 'b 2 7 Y8 ' 2ö 8 '> 8
O 8 U' " = &Y = 2
2' KU 2 ì ñ 7 Kn=
ì óôí öO 7 K > 2'7
8 ì ôì ò
10. Y8
8 2
O Y8
= 8 U'8Y'
= 8 O ' 8 ' 2
H= 7 K'= J Y 8 U 2
= 8 2 H O =
J Y b' O Y8 7 Y KU
HK= " K O'b ö UK'2 8 O'U= ÷ Y8 b' /
KYU ÷ 2 '7 "
O Y8 UK
8 8 = O
O'8
0'8 O' ÷ O OH2 n ÷ i H K
8 = 2= " 'O7 = O÷
i O'" 8 '! ' 8 U ÷i
'O= '
= 8 UK
OU U' ÷ O
&Y'K÷ 8 UK
'= 8 O O'" 8 '! ' =
' '= 8 Oö