2017-2018
瀛﹀勾鍖椾含甯傚瘑浜戝幙涔濆勾绾э紙涓婏級鏈熸湯鏁板璇曞嵎
涓�銆侀�夋嫨棰橈紙鏈鍏?/p>
16
鍒嗭紝姣忓皬棰?/p>
2
鍒嗭級涓嬮潰鍚勯鍧囨湁鍥涗釜閫夐」锛屽叾涓彧鏈変竴涓�夐」鏄鍚?/p>
棰樻剰鐨?/p>
.
1
锛?/p>
濡傚浘锛?/p>
鈻?/p>
ABC
涓紝
D
銆?/p>
E
鍒嗗埆鏄?/p>
AB
銆?/p>
AC
涓婄偣锛?/p>
DE
鈭?/p>
BC
锛?/p>
AD=2
锛?/p>
DB=1
锛?/p>
AE=3
锛?/p>
鍒?/p>
EC
闀?/p>
锛?/p>
锛?
A
锛?/p>
B
锛?/p>
1
C
锛?/p>
D
锛?/p>
6
2
锛?/p>
灏嗘姏鐗╃嚎
y=x
2
鍏堝悜宸﹀钩绉?/p>
2
涓崟浣嶅啀鍚戜笅骞崇Щ
1
涓崟浣嶏紝
寰楀埌鏂版姏鐗╃嚎鐨勮〃杈惧紡鏄?/p>
锛?/p>
锛?
A
锛?/p>
y=
锛?/p>
x
+
2
锛?/p>
2
+
1
B
锛?/p>
y=
锛?/p>
x
+
2
锛?/p>
2
锕?/p>
1
C
锛?/p>
y=
锛?/p>
x
锕?/p>
2
锛?/p>
2
+
1
D
锛?/p>
y=
锛?/p>
x
锕?/p>
2
锛?/p>
2
锕?/p>
1
3
锛庡凡鐭ョ偣
A
锛?/p>
1
锛?/p>
m
锛?/p>
锛?/p>
B
锛?/p>
2
锛?/p>
n
锛夊湪鍙嶆瘮渚嬪嚱鏁?/p>
y=
鐨勫浘璞′笂锛屽垯锛?/p>
锛?/p>
A
锛?/p>
m
锛?/p>
n
锛?/p>
0
B
锛?/p>
n
锛?/p>
m
锛?/p>
0
C
锛?/p>
m
锛?/p>
n
锛?/p>
0
D
锛?/p>
n
锛?/p>
m
锛?/p>
0
4
锛庡湪姝ｆ柟褰㈢綉鏍间腑锛屸垹
AOB
濡傚浘鏀剧疆锛庡垯
tan
鈭?/p>
AOB
鐨勫�间负锛?/p>
锛?/p>
A
锛?/p>
2
B
锛?/p>
C
锛?
D
锛?
5
锛庡鍥撅紝
Rt
鈻?/p>
ABC
涓紝鈭?/p>
C=90掳
锛?/p>
AC=4
锛?/p>
BC=3
锛庝互鐐?/p>
A
涓哄渾蹇冿紝
AC
闀夸负鍗婂緞浣滃渾锛庡垯涓嬪垪缁?/p>
璁烘纭殑鏄紙
锛?/p>
A
锛庣偣
B
鍦ㄥ渾鍐?/p>
B
锛庣偣
B
鍦ㄥ渾涓?/p>
C
锛庣偣
B
鍦ㄥ渾澶?/p>
D
锛庣偣
B
鍜屽渾鐨勪綅缃叧绯讳笉纭畾
6
锛庡鍥撅紝鈻?/p>
ABC
鍐呮帴浜庘姍
O
锛屸垹
AOB=80掳
锛屽垯鈭?/p>
ACB
鐨勫ぇ灏忎负锛?/p>
锛?/p>