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DE CUONG ON TAP TOAN 7_HAY LAM

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i 168G+-





)





49

-4=#










Ba
̀
i 178I


)





J

E

6/

H+

)

+





E

J

%+/




"








E

J%&

6!="

"







J

E
Ba
̀
i 188E


-





)

-4,

42H





*





)

-49'
Ba
̀
i 198#

)




*





$





,)



*+'





+

:)

*





$

)

%+"
Ba
̀
i 208I

)

-.

/!

)

-.

!

)

%

*




D

)

)

-.

/


)

!1-.



K)

!%



')

#


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



)

!%

*&



"





)



,,F
Ba
̀
i 218E






-+







6)

H+

,





-+



+



%+)



Ba
̀
i 228G+<5-74-;#

<57@<5


7@<597
Ba
̀
i 238G+5-74
,
x
#

<57@<5,7@<597
Ba
̀
i 248.










84


x
@49-@4


x

Ba
̀
i 258.









84-!

*

J59@07+












*

+
II. HI
̀
NH HO
̣
C




+





H)

&

+


#**





+

&


$"



"

%





"

)

&


++
1





%+







!+

+








'E*)

)


/%&





5

9

9

@

9+

9

@+

9

9+

7
,#*)

)

/%&






9+

+






Ba
̀
i 18#*+

+

"

&

/+






!



&

/+

+


Ba
̀
i 28HLJ

LE*+

+







+
Ba
̀
i 38.


)

**



+

&

JE4,

.


Ba
̀
i 48.

)

**



+

&

GM42


.


Ba
̀
i 58#*+

!)

&

$

)

**



+

&



+
Ba
̀
i 68G+

·
6
06xOy =
>"



J&

*+
·
xOy
.

JH+

L-!
J3+

)

L
Ba
̀
i 78#*+

'






&

/+

+.*+!



!*+

/


- 2 -
HÌnh 1
O
E
F
D
C
B
A
HÌnh 3
d
D
C
B
A

3
2
14
1
b
a
c
HÌnh 5
B
A
Ba
̀
i 88#*+

,+%

8
N?+

+.*+)


µ

A
N1



)



µ

A
N#*+

/

)


µ

A

Ba
̀
i 8-18#*+

0+

8
µ

A
406
6
!
µ


 


B B=
G

+

8FF%
Ba
̀
i 98G+

2!%

8FF%



6

06B =
#


µ

A


Ba
̀
i 108G+

=!%



µ
6 6

06 @ 6A B= =
G

+

J-FFE
Ba
̀
i 118#*+

:+FF%!%


µ
6

06A =
#




+

E
@
E
'
@J

@E


Ba
̀
i 128G+FF%


µ

6
 
'6A A− =
#

+

E

@E



Ba
̀
i 138?





+
c b⊥
N
M
m
c
b
a
50
°
130
°
Ba
̀
i 148G

+

JEFFGM
Ba

̀
i 158G+

JEG+


µ µ
6 6
6 @ 26A B= =
#

+

G
Ba
̀
i 168G+

JEG+


µ
µ
6 6
=6 @ 6B C= =
#/"



 +


  J
&

EG)

M#


·
BAC
@
·
ADC
@
·
ADB

Ba
̀
i 178G++

-L+



+%&

06
6

!L

/"



+

-L
7#

+

-L
%7?+

L-O!LO





L-!L#


·
-PLP

Ba
̀

i 188G+

JEG+

JE4JG!I

*



EG
7GF
µ
µ
B C=
%7GF
AM BC

Ba
̀
i 198G++

&

JE.

*+

5J@JE7


*+

5E@EJ7&

)

G

MGIQ87

JEG4

JEM
%7

JGM4

EGM
Ba
̀
i 208G+

JEG.



)

*+


5E!EJ7

5G!GJ7&

)

M5

J7GIQ8EG

/"





·
ABD

Ba
̀
i 218G+)

&

JE1)

**

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