BÀI TẬP CHƯƠNG 2
Bài 1

 !"#$%&'(Ω)!*+ ,
- #,./Ω
)!01!$!234$5. 
6 )7&486!'1!$
9 )7&686:;6<=> ?- @
Bài 2
4A!B26/.(C
)&486;
Bài 3
D γ86EF 86G(
6 +4.D4'H2EA!I962@
9 JKL26+G
 4.E4'G
Bài 4:
D γ,( 
)M6MNA!B26:9OB26
;
Bài 5
D γ,/ DP,' DQR,'/Mω
6 )A!4B26
9 )&686GSMT6!U!&UA!
 ?9V2WHA!1!6
 )!"O5+586A!B26
Bài 6
X6!YCZ;VK. D ,./ X6
;&[Ω:$L*2\) !01!$M62
6 C, DZ, 
9 C, DZ,]. 

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