2018
灞婇珮涓夊勾绾х涓�娆℃ā鎷熻�冭瘯
(
鍏?/p>
)
鏁?/p>
瀛?/p>
(
婊″垎
160
鍒嗭紝鑰冭瘯鏃堕棿
120
鍒嗛挓
)
鍙傝�冨叕寮忥細鏍锋湰鏁版嵁
x
1
锛?/p>
x
2
锛屸�︼紝
x
n
鐨勬柟宸?/p>
s
2
锛?/p>
1
n
鈭?/p>
n
i
锛?/p>
1
(x
i
锛?/p>
x)
2
锛屽叾涓?/p>
x
锛?/p>
1
n
鈭?/p>
n
i
锛?/p>
1
x
i
.
妫遍敟鐨勪綋绉?/p>
V
锛?/p>
1
3
Sh
锛屽叾涓?/p>
S
鏄１閿ョ殑搴曢潰绉紝
h
鏄珮锛?/p>
涓�銆?/p>
濉┖棰橈細鏈ぇ棰樺叡
14
灏忛锛屾瘡灏忛
5
鍒嗭紝鍏?/p>
70
鍒嗭紟
1.
鑻ラ泦鍚?/p>
A
锛?/p>
{x|1<x<3}
锛?/p>
B
锛?/p>
{0
锛?/p>
1
锛?/p>
2
锛?/p>
3}
锛屽垯
A
鈭?/p>
B
锛?/p>
________
锛?/p>
2.
鑻ュ鏁?/p>
(a
锛?/p>
2
i
)(1
锛?/p>
3
i
)(
i
鏄櫄鏁板崟浣?/p>
)
鏄函铏氭暟锛屽垯瀹炴暟
a
鐨勫�间负
________
锛?/p>
3.
鑻ユ暟鎹?/p>
31
锛?/p>
37
锛?/p>
33
锛?/p>
a
锛?/p>
35
鐨勫钩鍧囨暟鏄?/p>
34
锛屽垯杩欑粍鏁版嵁鐨勬爣鍑嗗樊鏄?/p>
________
锛?/p>
4.
涓轰簡浜嗚В鏌愬鏍＄敺鐢熺殑韬綋鍙戣偛鎯呭喌锛?/p>
闅忔満鎶芥煡浜嗚鏍?/p>
100
鍚嶇敺鐢熺殑浣撻噸鎯呭喌锛?/p>
鏁寸悊
鎵�寰楁暟鎹苟鐢诲嚭鏍锋湰鐨勯鐜囧垎甯冪洿鏂瑰浘锛?/p>
鏍规嵁姝ゅ浘浼拌璇ユ牎
2 000
鍚嶇敺鐢熶腑浣撻噸鍦?/p>
70
锝?/p>
78(
kg
)
鐨勪汉鏁颁负
________
锛?/p>
(
绗?/p>
4
棰?/p>
)
(
绗?/p>
5
棰?/p>
)
5.
杩愯濡傚浘鎵�绀虹殑娴佺▼鍥撅紝杈撳嚭鐨勭粨鏋滄槸
________
锛?/p>
6.
宸茬煡浠?/p>
2
鍚嶇敺鐢?/p>
2
鍚嶅コ鐢熶腑浠婚�?/p>
2
浜猴紝鍒欐伆鏈?/p>
1
鐢?/p>
1
濂崇殑姒傜巼涓?/p>
________
锛?/p>
7.
鑻ュ渾閿ョ殑渚ч潰灞曞紑鍥炬槸闈㈢Н涓?/p>
3
蟺
涓斿渾蹇冭涓?/p>
2
蟺
3
鐨勬墖褰紝鍒欐鍦嗛敟鐨勪綋绉负
________
锛?/p>
8.
鑻ュ疄鏁?/p>
x
锛?/p>
y
婊¤冻
飪?/p>
飪?/p>
飪?/p>
飪?
飪?/p>
x
鈮?/p>
4
锛?/p>
y
鈮?/p>
3
锛?/p>
3x
锛?/p>
4y
鈮?/p>
12
锛?
鍒?/p>
x
2
锛?/p>
y
2
鐨勫彇鍊艰寖鍥存槸
________
锛?/p>
9.
宸茬煡鍚勯」閮芥槸姝ｆ暟鐨勭瓑姣旀暟鍒?/p>
{a
n
}
鐨勫墠
n
椤瑰拰涓?/p>
S
n
锛岃嫢
4a
4
锛?/p>
a
3
锛?/p>
6a
5
鎴愮瓑宸暟鍒楋紝涓?
a
3
锛?/p>
3a
2
2
锛屽垯
S
3
锛?/p>
________
锛?/p>
10
锛庡湪骞抽潰鐩磋鍧愭爣绯?/p>
xOy
涓紝鑻ュ弻鏇茬嚎
x
2
a
2
锛?/p>
y
2
b
2
锛?/p>
1(a>0
锛?/p>
b>0)
鐨勬笎杩戠嚎涓庡渾
x
2
锛?/p>
y
2
锛?/p>
6y
锛?/p>
5
锛?/p>
0
娌℃湁浜ょ偣锛屽垯鍙屾洸绾跨蹇冪巼鐨勫彇鍊艰寖鍥存槸
________
锛?/p>
11
锛庡凡鐭ュ嚱鏁?/p>
f(x)
锛?/p>
sin
x
锛?/p>
x
锛?/p>
1
锛?/p>
4
x
2
x
锛屽垯鍏充簬
x
鐨勪笉绛夊紡
f(1
锛?/p>
x
2
)
锛?/p>
f(5x
锛?/p>
7)<0
鐨勮В闆嗕负
________
锛?/p>