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43
IIIIIIIV
III
IIIIV
AB B A
44
I4
1.1
1.
1.2
1.3
1.2
2. 2.1
2.2
1.1 1.2
1.
1.3
1.3 4
2.
2.1
2.1
3. 3.1 3.2 n a
3.3
3.1
4.
4.1
4.1
1. 1.1
2. 2.1
3. 3.1 3.2
3.2
4. 4.1
-
45
5.
5.1
5.2 5.3 5.4
5.1
2
46
II4
1. 1.1 1.2
1.1
1.2 / I
2. 2.1 1.
1.1
1.2
1.3
1.4
2. 2.1 2.2
2.1
3. 3.1
3.1
1.
1.1
2.
2.1 2.1
3.
3.1
1.
1.1 1.1
2. 2.1
2.1
1.
2.
-
47
III4
1.
1.1
2.
2.1
2.2
2.1 cot, sec, csc II
3.
3.1
4. 4.1
4.1
5. 5.1 5.2
5.1
1.
1.1 1.2
2. 2.1 2.2
3.
3.1 3.2
3.2
1.
1.1
1.2
2.
2.1
2.2
3.
3.1
3.2
48
IV4
1. 1.1
1.1
2.
2.1
2.2
3.
3.1
4.
4.1
4.2
4.3
4.3
1. 1.1
2.
2.1
2.2
3.
3.1 3.2
1.
1.1
1.1
2. 2.1
3. 3.1
4.
4.1 4.2
4.2
1. 1.1 2. 2.1
3. 3.1
-
49
1.
2. 3. 4.
5.
1 2 3 6.
7.
8.
50
IIIIII IV
I
2
1. 1.1
-
51
1.2
2 12
121 +=
2a a=
2a bab +
1.3 ( )3a b+ ( ) ( )2 2a b a ab b+ + ( ) ( )2 2a b a ab b + + ( )2a b c+ +
( ) ( )21 1x x x + + ( ) ( )1 2x y x y+ + 3 3 3 2 2 23 ( )( )x y z xyz x y z x y z xy yz zx+ + = + + + +
1 21 1 12
aba b
a b
= + +
2 2 2 2
1 c
a ba bc c
= + +
5 2 6 3 2+ = +
2 2 12x x x x + + = + 2. 2.1
,a b ,a b 2:3 x 2.2 a b a b+ + 3 2x < 1 1x < 1 2x< < 1 2 3x x <
ncxy = n=1234
52
( )ax ( )ax ( )bx 2 1x + 2 1x x+ + ( )xf ( )ax ( )f a ( )ax ( )xf ( )ax ( )xf a ( )xf ( )ax ( )bx ( ),a ( ),b ( )xf ( )ax ( )bx
I n
1. 1.1 ( )y f x= ( )0y mx b m x x= + = 0, ,m x b m y x 1.2 22,32)( 2 ++= xxxxf 2 4x x +
-
53
( ) ( )y c x a x b= 2y ax bx c= + + ( )2y a x h k= +
1.3 ny x= 1, 2,3, 4n = [ ]1.5,1.5
n ny cx= c ny cx= ( )ny c x h k= +
2. 2.1 ( ) ( )1 2 1n n n n nx a x x a a x a + + + = L n = 2,3,4 3322 ))(( axaaxxax +=++
( ) ( ) ( ) ( )2 33 22 5 6 3 1 1 1f x x x x a b x c x d x= + + = + + + , , ,a b c d ( )1.01f
( ) ( ) ( )( ) ( ) ( ) ( )3 22 5 6 3 1 1 2 1 2 3f x x x x a b x c x x d x x x= + + = + + +
, , ,a b c d ( )xf ( )ax ( )bx ( )( ) ( )( ), , ,a f a b f b f a,b f ( ) ( )( )( )f x q x x a x b= ( ) ( ) ( )1,1 , 2, 3 , 3, 7 ( ) ( ) ( ) ( )1 1 2f x a b x c x x= + +
, ,a b c 12
f
54
)8,13(),5,12(),3,11(
)1213)(1113()12)(11(8
)1312)(1112()13)(11(5
)1311)(1211()13)(12(3)(
++
= xxxxxxxf
( )11.5f ( ) ( ) ( )1,1 , 2, 3 , 3, 7
( ) 2f x a bx cx= + + , ,a b c IV
3. 3.1
2 0ax bx c+ + =
2 5 3 0x x+ + = 2 2 + 3 3 + 1 1 3
1 2 2x x+ =
3.2 n a
nx a= a>0 ( ) 3 22 3 4f x x x x= + + + n 3.3
( ) ( ) ( ) ( ) ( )11 2 21 1 1 mk s sr rk m mf x k x a x a x b x c x b x c= + + + +L L
( ) 4 3 25 21 30 9 7f x x x x x= + + 2x i= + 4. 4.1
( ) ( ) ( )21 2 4 0x x x + > ( ) ( ) ( )3 21 2 1 0x x x x + + > 3 1 0x > 4 22 3 0x x > 1 0
x< 1 1
1x
-
55
10 , 0.1,0.2, ,0.9x x = L
0, 1a a> 2x 10x
logax b= xa b= 10 ( ) yxxy logloglog +=
( )log / log logx y x y= ( ) xx loglog =
10 1log log
logax x
a=
logy x= logy x=
1. 1.1
n 1 513 6210 10 10 =
1 1 13 3 32 3 6 =
1 13 210 10<
1 1 1( ) ( ) ( )a b ca b c a b c a b c a b cx x x 2 2 3xa = +
3 3
6
x x
x x
a aa a
+
+ +
56
2. 2.1 2x
10x 3. 3.1 ( ) yxxy logloglog += ( )log / log logx y x y= ( ) xx loglog =
( )( ) log loglog log , log log log , x xm b an a a b aa nb b b c c a bm= = = 3.2 1log log
logax x
a=
10 4. 4.1 xy a= logax y= 1log loga x x= log a =
2
a bab + log log log2 2
a b a b+ + a b= 5. 5.1
5.2 1002 ( )101.18
5.3 5.4
-
57
II
/ 1. 1.1 1n na a d+ = + 1n na ra+ = 1n na a n+ = + 21n na a n+ = + ( )1 1n na n a+ = + 1.2 / II 2. 2.1
( )1 1 1
n n n
k k k kk k k
a b a b= = =
+ = + 1 1
n n
k kk k
ca c a= =
=
1
11 2
n n
k kk k
a a+
= =
=
1
n
kk
= 2
1
n
kk
= ( )1
11
n
k k k= +
1. 1.1
58
1.2
1.3 |S| S
10 8 3 5 7 21 4 1 3 6
10+8+3+5+7+21+4+1+3+6 = 68
51 51 50 1.4 A B |A B| = |A| + |B| A, B A B |A B| = |A||B| A, B, C
1 |A B| = |A| + |B| |A B| 2 |A B C| = |A| + |B| + |C| |A B| |B C| |C A| + |A B C| Principle of Inclusion and Exclusion PIE
Inclusion and Exclusion PIE 2. 2.1 n n!
1 n 1 n n!
n k
-
59
)!(!kn
nPnk = 1 k 1 n nkP
50 1
n k nk
1 k 1 n nk
10 310 1 0 A={0,1} n
An = A A . . . A n 2n 2.2
!!( )!
nk
nCk n k
= n k
!!( )!
nk
nCk n k
= k 1 n
nkC
n k
1n kkC+
k 1 n
1n kkC + n k x1 + x2 + + xn = k
1n kkC + 3.
3.1 (x + yn
5
2 1 1xx
+ + x
60
1. 1.1
3 2. 2.1
50 3. 3.1 ABC A 40%B
30%C 30% A 5%B 10%C 8% A
90% 90% 90% 2%
1. 1.1
1
1 nk
kx
n
=
= ( )1
1 2n
nx x xL
( )21
1 nk
kx
n
=
= ( )2
1
1 nk
kx x
n = 2 x=
ix ix
-
61
2. 2.1 0
( ) , , 1,2, ,k kx y k n= L , ( )21
( )n
k kk
e r y rx=
= r 2 2 2 2
1 1
( ) ( 2 ) = 2( ) 1n n
i i i i i ii i
e r y x y r x r r x y r= =
= + +
1
n
i ii
r x y=
= y rx= ( )e r
II
1. 2.
III
62
360 r 0 360
X
1. 1.1
-
63
O
( )2 2cos ,sinB ( )1 1cos ,sinA
1,0
2. 2.1
X 150 , 30 ; 225 , 45 ; 300 , 60 = = = = = =
cos , sin
2.2 r, 0 , 0 360r < < 3.
ABC B ( ), 0c C ( )cos , sinb A b A ABC 1 sin
2c b A
ABC 1 sin2
a c B
ABC 1 sin2
a b C ABC A B ( ), 0c C
( )cos , sinb A b A ( ) ( )2 22 2 2cos sin 2 cosa b A c b A b c bc A= + = +
4. ( )2 1 1 2 1 2cos cos cos sin sin = + 4.1
A,B ( ) ( )1 1 2 2cos ,sin , cos ,sin OAB ( )2 1 1 2 1 2cos cos cos sin sin = +
A B D
C
( )2 2 2 22 22 2
sin cos
2 cos
BC CD BD b A c b A
b c bc A
= + = + = +
64
( )1 2cos + ( )1 2sin + ( )1 2tan + cos2 sin 2 cos
2 sin
2
cos15o 5.
5.1 5.2
1. 1.1 1.2 2. 2.1 2.2 ax by k+ = 3. 3.1 3.2
2
-
65
a
vb
v
1 1 2 2cosa b a b a b = +v v
1 2 2 1sina b a b a b =
v v
1 1 12 2 2
a x b y ca x b y c
+ = + =
c xa yb= +v v v av bv 0 a
vb
v
1. 1.1
1.2
1 2 0 1 ,0 12 1
x y x y +
45
12
21
2. 2.1
66
ar
br
( )1 2,b b
( )1 2,a a
( ) ( )1 2 1 2, , ,a a a b b b= =r r ( ) ( ) 2 22 21 1 2 2 2 cosa b a b a b a b + = + r r r r 1 1 2 2 cosa b a b a b + =
r r
,a b
r r a br r
a b b a = r r r r ( )a b c a c b c+ = + r r r r r r r 2a a a =r r r ( ) ( )2 2 2 2 2ax by a b x y+ + + a b a b+ +r rr r 4, 51, 2
2.2 3. 3.1
1. O ABO0,0 ( )1 2,A a a ( )1 2,B b b 2. ,a b
r r
( )( ) ( ) ( )
2 2 2
22 2 2 21 2 1 2 1 1 2 2 1 2 2 1
1 1 1sin 1 cos2 2 2
1 12 2
OAB a b a b a b a b
a a b b a b a b a b a b
2 = = =
= + + + =
v v v v v v v v
1 1 1 2 1 12 2 1 2 2 2
a b a a b aa b b b b a
= = 1 1 1 1 1 1 12 2 2 2 2 2 2
a c b a b c ba c b a b c b
+ = ++
1 1 1 1
2 2 2 2
ca b a bc
ca b a b=
D C
( )1 2,A a a ( )1 2,B b b
O x
y
( )1 2 2 2 1 1 1 2
1 2 2 1
1 1 1( )( )2 2 2
12
OAB b b a b a b a a
a b a b
= + +
=
-
67
3.2
1 1 12 2 2
a x b y ca x b y c
+ = + =
cv
av
bv
av
bv
0
IV
0 0 1. 1.1 2. 2.1 2.2
( ) ( ){ }1,2,3 0,1, 1 | 0 1t t+ ( ) ( ){ }1,2,3 0,1, 1 | 0 1,0 2s t s t+ 3. 3.1 ( )1 2 3, ,a a a ( )1 2 3, ,b b b
1 1 2 2 3 3 cosa b a b a b a b + + =v v
av
bv
1 1 2 2 3 3a b a b a b+ + 4. 4.1
68
( ) 2 2 22 2 3 3 1 1 22 2 22 3 3 1 1 2
| | | |a a a a a a
A a b a bb b b b b b
= = + +v v v v 4.2 , ,a b c
vv v )( cba vvv
4.3
2
2
2
1 1 1
a ba caab b cbac bc c
++
+
baccbcabaacb
++
+
1. 1.1 2. 2.1 1: 1
2 3x zL y = + = : 2 3E x y z+ =
2.2 3. 3.1 3.2
1 1 1 1
2 2 2 2
3 3 3 3
a x b y c z da x b y c z da x b y c z d
+ + = + + = + + =
d
uv a
vb
v c
v a
vb
v c
v
0
-
69
1.
2. 2.1 Caley-Hamilton 3. 3.1 4. 4.1 4.2
1 22 1
A = A 1
0
01
12
21
12
34
12
21
70
1. 1.1
( )22x y c y c+ - = + 2. 2.1
( ) ( )2 22 2 2x c y x c y a + + + + =
x x hy y k= =
( ) ( )2 22 2 1
x h y ka b + =
2 2
2 2 1x ya b
+ =
2 2
2 2x y ka b
+ =
,x yx yt t
= = 2 2
22 2
x y ta b
+ = 2 2
2 2 1x ya b
+ =
2 2 0ax cy dx ey f+ + + + = ( ) ( )2 2 2 2a x h c y k ah ck f + = +
3. 3.1
( ) ( )2 22 2 2x c y x c y a + + + =