绗?/p>
1
椤碉紙鍏?/p>
18
椤碉級
2014-2015
瀛﹀勾灞变笢鐪佸痉宸炲競楂樹簩锛堜笂锛夋湡鏈暟瀛﹁瘯鍗凤紙鐞嗙锛?/p>
涓�銆侀�夋嫨棰橈細鏈ぇ棰樺叡
10
灏忛锛屾瘡灏忛
5
鍒嗭紝鍏?/p>
50
鍒嗭紟鎶婃纭瓟妗堟秱鍦ㄧ瓟棰?/p>
鍗′笂锛?/p>
1
锛?/p>
锛?/p>
5
鍒嗭級璁?/p>
a
锛?/p>
b
鈭?/p>
R
锛屽垯
鈥渁
+
b
锛?/p>
2鈥?/p>
鏄?/p>
鈥渁
锛?/p>
1
涓?/p>
b
锛?/p>
1鈥?/p>
鐨勶紙
锛?/p>
A
锛庡厖鍒嗛潪蹇呰鏉′欢
B
锛庡繀瑕侀潪鍏呭垎鏉′欢
C
锛庡厖鍒嗗繀瑕佹潯浠?/p>
D
锛庢棦闈炲厖鍒嗗張闈炲繀瑕佹潯浠?/p>
2
锛?/p>
锛?/p>
5
鍒嗭級濡傛灉
a
锛?/p>
b
锛屽垯涓嬪垪鍚勫紡姝ｇ‘鐨勬槸锛?/p>
锛?/p>
A
锛?/p>
a鈥?
x
锛?/p>
b鈥?
x
B
锛?/p>
ax
2
锛?/p>
bx
2
C
锛?/p>
a
2
锛?/p>
b
2
D
锛?/p>
a鈥gx
锛?/p>
b鈥gx
3
锛?/p>
锛?/p>
5
鍒嗭級鍦ㄢ柍
ABC
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acosA=bcosB
锛屽垯鈻?/p>
ABC
鐨勫舰鐘舵槸锛?/p>
锛?/p>
A
锛庣瓑鑵颁笁瑙掑舰
B
锛庣洿瑙掍笁瑙掑舰
C
锛庣瓑鑵扮洿瑙掍笁瑙掑舰
D
锛庣瓑鑵版垨鐩磋涓夎褰?/p>
4
锛?/p>
锛?/p>
5
鍒嗭級璁?/p>
{
a
n
}
锛?/p>
n
鈭?/p>
N
*
锛夋槸绛夊樊鏁板垪锛?/p>
S
n
鏄叾鍓?/p>
n
椤圭殑鍜岋紝涓?/p>
S
5
锛?/p>
S
6
锛?/p>
S
6
=S
7
锛?/p>
S
8
锛屽垯涓嬪垪缁撹閿欒鐨勬槸锛?/p>
锛?/p>
A
锛?/p>
d
锛?/p>
0
B
锛?/p>
a
7
=0
C
锛?/p>
S
9
锛?/p>
S
5
D
锛?/p>
S
6
涓?/p>
S
7
鍧囦负
S
n
鐨勬渶澶у�?/p>
5
锛?/p>
锛?/p>
5
鍒嗭級宸茬煡
x
銆?/p>
y
婊¤冻绾︽潫鏉′欢
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z=2x
+
4y
+
5
鐨勬渶灏忓�间负锛?/p>
锛?/p>
A
锛庯梗
10
B
锛庯梗
15
C
锛庯梗
20
D
锛庯梗
25
6
锛?/p>
锛?/p>
5
鍒嗭級鍦ㄧ洿涓夋１鏌?/p>
ABC
锕?/p>
A
1
B
1
C
1
涓紝鈭?/p>
ACB=90掳
锛?/p>
CA=CB=CC
1
=1
锛屽垯鐩寸嚎
A
1
B
涓庡钩闈?/p>
BB
1
C
1
C
鎵�鎴愯鐨勬寮﹀�间负锛?/p>
锛?/p>
A
锛?
B
锛?
C
锛?
D
锛?