1
涓撻
13
浣嶇疆纭畾
鈥斺�斿钩闈㈢洿瑙掑潗鏍囩郴
渚?/p>
1
锛?/p>
1
锛?/p>
2
鎻愮ず锛氱敱棰樻剰鐭?/p>
2
3
8
3
2
2
a
b
a
b
飥?/p>
飥?/p>
飪?/p>
飪?/p>
飥?/p>
飥?/p>
飪?/p>
锛岃В寰?/p>
2
4
a
b
飥?/p>
飥?/p>
飪?/p>
飪?/p>
飥?/p>
飪?/p>
锛屾晠
a
+
b
=(
锛?
2)+4=2
锛?/p>
锛?/p>
2
锛?/p>
6
鎴栵紞
4
鎻愮ず锛氱敱棰樻剰鐭?/p>
|1
锛?/p>
x
|=5
锛岃В寰?/p>
x
=6
鎴栵紞
4
锛?/p>
渚?/p>
2
D
鎻愮ず锛?/p>
濡傚彸鍥撅紝
浠庣偣
A
鍑哄彂锛?/p>
姣忔鍚戜笂鎴栧悜鍙宠蛋涓�姝ワ紝
鍒拌揪姣?/p>
涓�鐐圭殑
鏈�鐭矾寰勬潯鏁板鍥句腑鎵�鏍囨暟瀛楋紝濡傦細鍒拌揪鐐?/p>
P
锛?/p>
Q
鐨勬渶鐭矾寰勬潯鏁板垎鍒?/p>
涓?/p>
2
鍜?
3
锛屼互姝ょ被鎺紝鍒拌揪鐐?/p>
B
鐨勬渶鐭矾寰勬潯鏁颁负
35
鏉★紟
渚?/p>
3
濡傚浘锛氳
G
鐐瑰潗鏍囦负锛?/p>
0
锛?/p>
b
锛夛紝
b
>0
锛屽洜涓?/p>
S
闀?/p>
鏂?/p>
褰?/p>
OABC
锛?/p>
S
螖
GEC
=
S
螖
OGC
+
S
螖
AGE
+
S
螖
BEC
锛屾墍浠?/p>
9
a
锛?
20=
1
1
1
9
3(
)
6
2
2
2
b
a
b
a
飥?/p>
飥?/p>
飥?/p>
锛岃В寰?/p>
3
20
2
3
b
a
飥?/p>
飥?/p>
锛庡悓鐞嗭紝鐢?/p>
S
闀挎柟褰?/p>
OABC
锛?
S
螖
GFB
=
S
螖
ABG
+
S
螖
OGF
+
S
螖
BFC
锛屽緱
1
1
1
9
16
9(
)
3
6
2
2
2
a
a
b
b
a
飥?/p>
飥?
飥?/p>
飥?/p>
飥?/p>
锛岃В寰?/p>
3
a
=32
锛?/p>
6
b
锛庢妸
3
20
2
3
b
a
飥?/p>
飥?/p>
浠ｅ叆涓婂紡涓紝寰?/p>
3
a
=72
锛?/p>
9
a
锛岃В寰?/p>
a
=6
渚?/p>
4
锛?/p>
1
锛夌暐
锛?/p>
2
锛?/p>
S
鍥涜竟褰?/p>
ABCD
=44
锛?/p>
3
锛夆憼褰撶偣
P
鍦?/p>
x
杞翠笂锛?
璁?/p>
P
锛?/p>
x
,0)
锛庘埓
PB
=|
x
锛?/p>
7|
锛屸埓
1
|
7|
5=50
2
PBC
S
x
飥?/p>
飩?/p>
飥?/p>
飩?/p>
锛庘埓
x
=27
鎴栵紞
13
锛庘埓
P
1
锛?/p>
27
锛?/p>
0
锛夛紝
P
2
锛堬紞
13
锛?/p>
0
锛夛紟鈶″綋
P
鐐瑰湪
y
杞翠笂锛屽欢闀?/p>
CB
浜?/p>
y
杞翠簬
E
鐐癸紝杩囩偣
C
浣?/p>
CF
鈯?
y
杞翠簬
F
锛庤
E
锛?/p>
0
锛?/p>
y
E
锛夛紝
CFE
1
1
S
=
5-
)
9,
7
(
)
2
2
E
BOE
E
y
S
y
飦?/p>
飥?/p>
飩?/p>
飩?/p>
飥?/p>
锛?/p>
锛?/p>
1
(7
9)
5
2
S
飥?/p>
飩?/p>
姊舰
CFOB
=
锛庡張
CFE
S
=
BOE
CFOB
S
S
飦?/p>
飥?/p>
姊舰
锛岃В寰?
35
2
E
y
飥?/p>
飥?/p>
锛?/p>
35
(0,
)
2
E
飦?/p>
飥?/p>
锛岃
P
锛?/p>
0
锛?/p>
y
)
锛屽綋
P
鐐瑰湪
E
鐐逛笂鏂规椂锛?/p>
PE
=
y
+
35
2
锛?/p>
鈭?
PBC
PEC
PEB
S
S
S
飥?/p>
飥?/p>
锛岃В寰?/p>
65
2
y
飥?
锛涘綋
P
鐐瑰湪
E
鐐逛笅鏂规椂锛?/p>
PE
=
35
2
y
飥?/p>
飥?/p>
锛屸埓
P
B
C
P
E
C
P
E
B
S
S
S
飥?/p>
飥?/p>
锛岃В寰?/p>
135
2
y
飥?/p>
飥?
锛庣患涓婏細
P
1
锛?/p>
27
锛?/p>
0
锛夛紝
P
2
锛堬紞
13
锛?/p>
0
锛夛紝
P
3
锛?/p>
0
锛?/p>
65
2
锛夛紝
P
4
锛?/p>
0
锛?/p>
135
2
飥?/p>
锛?/p>
婊¤冻棰樻剰锛?/p>
渚?/p>
5
鐐?/p>
P
7
涓庣偣
P
1
閲嶅悎锛?/p>
6
涓偣鏋勬垚涓�涓惊鐜紝
P
2
锛?/p>
1
锛岋紞
1
锛夛紝
P
7
锛?/p>
1
锛?/p>
1
锛夛紟鈭?/p>
100=6
脳
16+4
锛屸埓鐐?/p>
P
100
涓?/p>
鐐?/p>
P
4
鍧愭爣鐩稿悓锛屼负锛?/p>
1
锛岋紞
3
锛夛紟
渚?/p>
6
锛?/p>
1
锛夌敱骞崇Щ鐭?/p>
C
锛?/p>
0
锛?/p>
2
锛夛紝
D
锛?/p>
4
锛?/p>
2
锛夛紟
S
鍥涜竟褰?/p>
ABCD
=4
脳
2=8
锛?/p>
锛?/p>
2
锛?/p>
鈭?/p>
S
螖
PAB
=
S
鍥涜竟褰?/p>
ABDC
=8
锛?/p>
璁?/p>
OP
=
h
锛?/p>
鍒?/p>
1
8
2
PAB
S
AB
h
飥?
飥?/p>
锛?/p>
鍙?/p>
AB
=4
锛?/p>
鈭?/p>
AB
=4
锛?/p>
1
4
8
2
h
飦?/p>
飩?/p>
飩?/p>
飥?/p>
锛?/p>
瑙ｅ緱
h
=4
锛?/p>
鏁?/p>