Sistema ELITE de Ensino COLÉGIO NAVAL 2011/2012
www.sistemaelite.com.br
11
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7uMM Ã393M7e3q3M:.;Me7oMB.McMFMqL.eL4dM
RESOLUÇÃO:
@n47:63oL4MtR7M3MtR3.ep9397M97MqL.eL4MtR7M4OLM3Ã:74 Ã7.e39L4M3MÃ393M7e3q3M97sp.7M3M
47tRN.Ãp3,M
= = = = −
F B ã .
Fm ãm lmdddm B. F mM4R3M4Lo3M6387:D,M
i
−
−
= + + + + + = + + + + − + −
= + + + + + = − + − + + + +
= + + + + +
⋅
= ⇔ =
. F B ã . F .
. . . F ã B F
.
"
. .
> ddd F ã l ddd rB. ãu rB. Fu
> ddd rB. Fu rB. ãu ddd l ã F
B> B. B. B. ddd B. B.
B. r.u
> > .
"
ii
@RM 47?3mM Ã393M 7e3q3M qL44RpM Ro3M tR3.ep9397M 5oq3:M 97MqL.eL4M 7M 3M 4Lo3M 974474M X.XM
q:po7p:L4M5oq3:74M-M
"
./i
i
E34M97o3p4M38e7:.3ep634Mn34e3Me74e3:M.MvMBM7M67:7oL4MtR7M34M3sp:o3SA74M4OLMs38434dM
Resposta: A
[email protected]:LM:738M
)
Bé U Fl ãM-Mp(R38M3M
T(iil U ãi
*(iii U í ãi
ÃuMM ãMU"i
9uMMFã U ã ãi
7uMM BM
i
RESOLUÇÃO:
@n47:63oL4MtR7,M
i
23:3M:74L867:M7447Mq:Ln87o3M9767147MLn47:63:MLMq:L9ReLM.LeD678,MM
( )
3
3 2 2 3
a b a 3a b 3ab b− = − + − /i
0L.4p97:3.9LM3M7)q:744OL,M
i( ) ( ) ( ) ( ) ( )
3 2 3
3 2 3 2 2 3
a b 3 a 3a b 3 3a b 3 b 3 a 9ab 3 a b b 3− = − + − = + − + /i
Y3oL4M7.eOLMe7.e3:Mp97.epspÃ3:M.ao7:L4MqL4pep6L4MaM7MbMe3p4MtR7M
( )( )
3 2 2 3
26 15 3 a 9ab 3 a b b 3− = + − + /i
( ) ( )
3
3 2 2 3
26 8 18 2 9 2 1 15 3 2 1 1 26 15 3 2 3= + = + ⋅ ⋅ ∧ = ⋅ + ⇒− = − i
ELe7MtR7Mq3:3Mp97.epspÃ3:MLM638L:M97M3Me74e3oL4ML4MÃRnL4Mq7:s7peL4Mo7.L:74MtR7MBédMM
( )
3
33
26 15 3 2 3 2 3⇒ − = − = − i
( ) ( )
2 2
2
2 3 2 2 2 3 3 4 4 3 3 7 4 3 2 3 7 4 3− = − ⋅ ⋅ + = − + = − ⇒− = − i
23
26 15 3 2 3 (2 3) 7 4 3⇒ − = − = − = − i
Resposta: B