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Mã đề 579
1
579
2
579
y
2
-1 O
1
x
-2
y
3
(S1)
O
(S3)
3
(S2)
5
8
x
3
579
4
579
y
4
3
2
-4
1
-4
3
-3
O
-1
1
4 x
2
y=f(x)
-3
y
3
B
A
-1
O
2
x
1
5
579
y
a
O
c
b
x
6
579
z1
z2
z1
z2
1 3i
3 4i
12 32
3 4
2
2
10
.
5
z x yi.
z 1 2i x 1 y 2i
x 1
2
y 2
2
x 3
2
2
y 2
2
z 3
x 3
2
y2 .
y 2 x 2 y 2 2x 4y 5 x 2 y 2 6x 9
8x 4y 4 0 2x y 1 0.
x 1
z
2x y 1 0.
z 1 2i z 3
7
579
x
8
2
k 2 k .
y sin 2 x 4 sin x 5
8
579
xm
2 x 3x m 0
2
m
x
S
V x.
x2 3
4
2x 2 3x m
y
x m
h x.
x2 3
3
x 3 1 x 1.
4
4
9
579
3
A 1; 0; 0 B 0;2; 0 C 0; 0; 3
x y z
1.
1 2 3
10
579
r, h
N
AC .
V 3r h 9r 2h 54.
2
h.
3r
r 2h 6.
MN / /AB.
cos AB, DM cos DM , MN cos DMN .
ACD
DN DM
BCD
AB 3
.
2
cos DMN
MN
AB
.
2
DM 2 MN 2 DN 2
3
.
2.DM .MN
6
11
579
SE 2EC d S , EB 2d C , EBD
VS .EBD 2VC .EBD 2VE .BCD VE .ABCD .
1
SE 2EC SC 3EC d E , ABCD d S , ABCD .
3
1
1
VE .ABCD VS .ABCD .
3
3
12
579
a 2;2; 0 , b 2;2; 0 , c 2;2;2 a b c 2; 6;2.
a b c 22 62 22 2 11.
Oz
P
9
a.0 b.0 c.1 0 c 0.
P
Oz
1
C 9k x
k 0
9
k 0; 0;1.
c 2 d 2 0.
1
x 3
x
9k
x
x3
3
k
9
C
k 0
O.
k
9
x 4k 9 .
d 0.
ycbt 4k 9 3 k 3.
C 93 84.
13
579
O
AC .
AC
O
BD O SBD .
O SBD d A, SBD d C , SBD
6a
.
7
14
579
3
3
ln x 1dx ln x 1d x 1 x 1 ln x 1
2
2
3
2 ln 2 1dx 2 ln 2 1.
3
2
3
2
x 1
dx
x 1
a 2,b 1 a b 3.
2
Ox
a 0, d 0.
: ax by cz d 0.
M 2; 1; 3 b 3c b 3, c 1.
: by cz 0.
: 3y z 0.
15
579
16
579
8
f ( x)dx
0
2
log2 2x 1 m 1 log 3 m 4x 4x 2 1 log2 2x 1 m log 3 m 2x 1 1 0
2
f x log2 2x 1 m log3 m 2x 1 1.
17
579
2
f 1 x log2 2 1 x 1 m log3 m 2. 1 x 1 1
1 x0
1
x0 1 x0 x0 .
2
log2 m log 3 m 1 0 log2 3. log 3 m log 3 m 1 0
log 3 m log2 3 1 1 log 3 m
H
d
1
3
log2
2
P
A 2;2;2, B 1;2; 3
m3
log 3 2
2
M, K.
AB MK
1, 2 AB HKM AB HM .
ud 2m 1; 2; m 2.
m3
.
H
d, K
d
AB d .
AB 1; 0;1
2
log2 2x 1 m log 3 m 2x 1 1 f x .
x0
M d P
P .
2.
log 3 2
2
6;9 .
P .
AB HK
1.
AB d.
ycbt 2m 1 m 2 0 m 3.
18
579
4x 2 y 2 9z 2 4x 12z 11 2x 1 y 2 3z 2 16.
2
2
2
P 4x 2y 3z 2 2x 1 2y 3z 2 4
12 4 16.
P 4x 2y 3z
2
2
2
22 12 . 2x 1 y 2 3z 2 4
16.
2
2
2x 1 y 2 3z 2 16
11
8
10
x ,y , z .
2
x
1
y
6
3
9
2 2 3z 2 0
'' ''
z 2 2iz 2 z . z 2i 2.
z 2i z 2i z 2.
19
579
2
z . z 2i 2 z z 2 2 z 2 z 2 0 z 1 3.
3 1.
z
K MN AB, S KP AA, H MN AD,Q SH C D .
20
579
MNP
SA AK AH
1
d A, SHK
2
3a
.
2
SHK .
d A, MNP d A, SHK .
1
1
1
a 3
d A, SHK
.
2
2
2
2
SA
AH
AK
Oxyz
a
a a
A 0; 0; 0, M ; a; 0, N a; ; 0, P ; 0;a .
2 2
2
a a
MN ; ; 0, MP 0; a; a nMNP 1;1;1.
2 2
3
MNP : x y z 2 a 0.
d A, MNP
3
a
2
3
a 3
.
2
21
579
MF1
O
9
23
, MF2
.
4
4
MN
NF1
23
9
, NF2 .
4
4
F1F2
O
NF2 MF1
MF1NF2
9 9 9
.
4 4 2
a 2b 3c 0 a 2b 2c c a 2b 2c
2
2
2
2
a 4b 4c 4 a.b 2b.c c.a c
15
a.b 2b.c c.a .
2
c
5 16 12 4 a.b 2b.c c.a 3
2
2
22
579
23
579
24
579
S
M
S .
I
1
1
IC RS 6, IM RS 4 MB 2 5 BC 4 5.
2
1
1
S ABC d A, BC .BC 2 5.AM 2 5 AI IM 2 5.12 24 5.
2
24 5.
ABC
25
579