! 4 1x − !" #$% & '() *+, * ≠ * 0≥ -' . * ≠ /* ≠ ,-' . * ≠ 0 ! 4 1x x − !" #$% & '() *+,-' . * ≠ *+ * ≠ , /* ≠ ,-' . * ≠ 1 ! 8 2008 2 x x + + !" #$% & '() *+0 * ≠ 0-' . * ≠ , * ≠ ,-' . * ≥ 0 /* ≠ ,-' . *+0 2 ! 2 4 4 4x x− + !" #$% & '() *30 *+0 * ≠ 0 /* ≥ 0 4% . 5*6'"!"*3 2 x *3, *3 *7, /* ≥ , 8% . 5*9 2 8x = − *3:';*3: *3: *3: /* ∈∅ <% . 5*= !" 2 2 1 1x x x− + = − >'= ? ! * ≤ * ≠ *+ /* ≥ :% . 56@ *A56'"!" 3 27 x x = B'= ? ! 1 1, /: 0 ( 3 16 % . $' C ! '(9D . #$ 0 2 : / ,% C'5@ !AC"#$!' !!A6' 0 0= 4− -@#$% & ' 4− 30 / 4− 30 % C'5@ !AC"#$!' !!A6' ,7'79 a b< a b< E'B9+,3+'79 <+ 48 /703+ 1 2− < 0% C'5@ !AC"#$!' !!A6' 4 F32 ; , 0a b a b a b+ = − ∀ > 9 4+ 32 / 16 9 16 9+ = − 1"*70B$" #9 !0F 2 4 4 2 x x x − + − B'= ? ! 0 1 /0*F0 2"G ?#$C% . #* 0 0 10 *F,3,EBG ?#$C% . #E!" #$ 5H' . *3 ± 10 *3 10 *3 10 /* ∈∅ 4% C'5@ =D #$ !C"#$!' !=D #$ !6') ( ) 2 2 1 9 8− = − ( ) 2 4 4− = − ( ) 2 4 4= / 2 ;x x x= ∀ 8$" #9 ! 2 75 4 12 3 50 72− + − >'= ? ! 2 3 9 2− 2 3 9 2+ 2 2 9 3+ / 11 6 <" 1 a a− B= ' . '6@ -' . "C"#$IA !D#'= ? ! a a− a− / a :$" #9 !J3 12 2 35 8 2 15+ − − >'= ? ! 7 3− 7 3+ 7 2 5 3+ − /5@ ( K' (' ! $" #9 ! 2 3 5 2 5 3 + + − B'= ? ! 0E1F 5 1F 5 , / 3 5 2 + 0,% . 5*9 4* 0 100 3, * ∈∅ *30';*30 2 2x hay x= = − /* R∈ 0% C'5@ !A 4 5 80= 4 5 80= 4 5 80− = − / 4 5 2 20= 00% C'5@ !A 54 3 6= 108 6 3= 2 9.63 21a a= / 0,1 20000 10 2= 01 $" #3 2 2 1 2 + + B'= ? !) 0 2 /1 02% C'5@ !A ( ) ( ) 10. 2 10 . 2 20− − = − − = . 2 2x x− = − # * ≤ , 1 2 2 2 = / 2. 8 4= 04L HA ##' . "6'=A;H' . M? 5" 6@ !*B 2 x x= ± M? 5" 6@ !*B 2 0x x x= ⇔ ≥ M? 5" 6@ !*B 2 x x≥ /M? 5" 6@ !*B 2 x x> 08$' G ?#$C% . # N 3 ' B( HA ##' . "6'=A;= #$#A O N3' N3'-? ' ≥ , N3'-? N+, /(HA #(' ! 0<' G ?#$C% . # 2 x x= − B( HA ##' . "6'=A;= #$#A -@#$ 5 * ≥ , * ≤ , /*3 0:"6' #'6@ '3 3 2 -' . 93 2 3 B( K' #' . "6'=A;= #$#A '39 '79 '+9 /'30>9 0 $" # 3 2 2 8 18 50− − + B( HA ##' . "6'=A;= #$#A O 2 2− 0 2 / 2 2− 1, $" # ( ) ( ) 2 2 15 4 3 15− + − + B( HA ##' . "6'=A;= #$#A O 0 15 15 / 1 $" # ( ) ( ) 2 2 4 3 3 27 4− − − B( HA ##' . "6'=A;= #$#A O , 8 3 : /( K' (' ! 10% #EC $" # 8 18 32 6 5 7 9 25 49 − + B'= ? !( K' : 2 3 2− 5 2 / 4 2 11% #EC $" # 9 4 2− B( HA ##' . "6'=A;= #$#A O 3 2 2− 1 2 2− 2 2 1− /( K' (' ! 12% #EC $" # 2 8 12 2 32 48 − − B( HA ##' . "6'=A;= #$#A O 0 / 1 2 14% #EC $" # 4 2 3. 4 2 3− + B( HA ##' . "6'=A;= #$#A O 2 0 0 2 /( K' (' ! 18% #EC $" # 2 3 2 3 − + B( HA ##' . "6'=A;= #$#A O 3 2− 2 3+ 0 3 / 1<M? ≤' BC $" #9 !J3 2 2 1 2 2 1a a a a− + − + + >L HA ##' . "6'=A;= #$ #A O J30 J30' J30' /J3 1:% . 5= . ( #!" #$% & '! '9 ! 2 4x − B( HA ##' . "6'=A;= #$#A O * ≥ 0';* ≤ 0 * 2≥ ± * 2≥ / 2 2x− ≤ ≤ 1% . 5= . ( #!" #$% & '! '9 ! 2 9 x− B( HA ##' . "6'=A;= #$#A O * ≥ 1';* ≤ 1 * 3≤ ± * 3≤ / 3 3x − ≤ ≤ 2,' G ?#$C% . # 2 6 9x x− + 31B( HA ##' . "6'=A;= #$#A O *3, *38 *3,-' . *38 /( K' (' ! 2' G ?#$C% . # 2 1x − 3*FB( HA ##' . "6'=A;= #$#A O *3 *3 *3-' . *3 /( K' (' ! 20' G ?#$C% . # 2 x 3*0B( HA ##' . "6'=A;= #$#A O *3 *3 *3-' . *3 /( K' (' ! 21' G ?#$C% . # 9 9 4 4 2x x+ − + = B( HA ##' . "6'=A;= #$#A O *3 *30 *31 /-@#$ 5 22' G ?#$C% . # 4 4 1 1x x x− − − = − B( HA ##' . "6'=A;= #$#A O *3 *32 *9A (; . /* ≥ 24D #$ ! ( ) ( ) 1 . 3 1. 3x x x x− − = − − B= #$C"#$= . ( #= #$#A #' . "6'=A;O * ≥ 1 * 1 3hay x≤ ≥ * ≥ /5" * ∈ 28% # 3 3 125 6, 4. 100 − B'= ? !) 0 0 2 /2 2<% # 3 3 3 1000 125 64− + '= ? ! / 2:% # 3 3 3 216 125 2 0,008− + − − B'= ? ! B2 P,B8 B2 /P,B8 H"#$!''$Q;'"">!"5>-# . -' . 9 3 2 3 B( K' #' . "6'=A;= #$#A ' 39 '7 9 '+ 9 /'30> ;9 0 . F32 ; , 0a b a b a b+ = − ∀ > 9 4+ 32 / 16 9 16 9+ = − 1"*70B$" # 9 !0F 2 4 4 2 x x x − + − B'=