楂樹腑鏁板瀛︿範鏉愭枡
榧庡皻鍥炬枃
*
鏁寸悊鍒朵綔
2016
骞撮檿瑗跨渷瑗垮畨甯傞珮鑰冩暟瀛︿笁妯¤瘯鍗凤紙鐞嗙锛?/p>
涓�銆侀�夋嫨棰橈紙鍏?/p>
12
灏忛锛屾瘡灏忛
5
鍒嗭紝婊″垎
60
鍒?/p>
.
鍦ㄦ瘡灏忛缁欏嚭鐨勫洓涓�夐」涓紝鍙湁涓�椤?/p>
鏄鍚堥鐩姹傜殑锛?/p>
1
锛庡鏁?/p>
2
锕?/p>
mi
鏄?
锛?/p>
m
锛?/p>
n
鍧囦负瀹炴暟锛夌殑鍏辫江澶嶆暟锛屽垯
m
+
n
鐨勫�间负锛?/p>
锛?/p>
A
锛庯梗
6
B
锛庯梗
3
C
锛?/p>
3
D
锛?/p>
6
2
锛?/p>
sin30
掳
sin75
掳
锕?/p>
sin60
掳
cos105
掳
=
锛?/p>
锛?/p>
A
锛?/p>
B
锛庯梗
C
锛?
D
锛庯梗
3
锛庤嫢
a
+
b=5
锛屽垯
a
锛?/p>
0
锛?/p>
b
锛?/p>
0
鏄?/p>
ab
鏈夋渶澶у�?
鐨勶紙
锛?/p>
A
锛庡繀瑕侀潪鍏呭垎鏉′欢
B
锛庡厖瑕佹潯浠?/p>
C
锛庡厖鍒嗛潪蹇呰鏉′欢
D
锛庢棦闈炲厖鍒嗕篃闈炲繀瑕佹潯浠?/p>
4
锛庡凡鐭?/p>
{
a
n
}
鏄叕宸负锕?/p>
2
绛夊樊鏁板垪锛岃嫢
S
5
=10
锛屽垯
a
100
=
锛?/p>
锛?/p>
A
锛庯梗
192
B
锛庯梗
194
C
锛庯梗
196
D
锛庯梗
198
5
锛庢姇绡祴璇曚腑锛屾瘡浜烘姇
3
娆★紝鑷冲皯杩炵画鎶曚腑
2
涓墠鑳介�氳繃娴嬭瘯锛岃嫢鏌愬悓瀛︽瘡娆℃姇绡姇涓殑
姒傜巼涓?/p>
0.6
锛屼笖鍚勬鎶曠鏄惁鎶曚腑鐩镐簰鐙珛锛屽垯璇ュ悓瀛﹂�氳繃娴嬭瘯鐨勬鐜囦负锛?/p>
锛?/p>
A
锛?/p>
0.648
B
锛?/p>
0.504
C
锛?/p>
0.36
D
锛?/p>
0.312
6
锛?/p>
闃呰濡傚浘鎵�绀虹殑绋嬪簭妗嗗浘锛?/p>
濡傛灉杈撳嚭鐨勫嚱鏁板�煎湪鍖洪棿
鍐咃紝
閭ｄ箞杈撳叆瀹炴暟
x
鐨勫彇
鍊艰寖鍥存槸锛?/p>
锛?/p>