2017-2018
瀛﹀勾姹熻嫃鐪佸崡浜競楂樹笁锛堜笂锛?/p>
9
鏈堣皟鐮旀暟瀛﹁瘯鍗?/p>
涓�銆佸～绌洪锛氭湰澶ч鍏?/p>
14
灏忛锛屾瘡灏忛
5
鍒嗭紝鍏?/p>
70
鍒嗭紟璇锋妸绛旀濉啓鍦ㄧ瓟棰?/p>
鍗＄浉搴斾綅缃笂锛?/p>
1
锛?/p>
锛?/p>
5
鍒嗭級鑻ラ泦鍚?/p>
P=
{
锕?/p>
1
锛?/p>
0
锛?/p>
1
锛?/p>
2
}
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Q=
{
0
锛?/p>
2
锛?/p>
3
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P
鈭?/p>
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2
锛?/p>
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5
鍒嗭級
鑻?/p>
锛?/p>
a
+
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锛?/p>
锛?/p>
3
锕?/p>
4i
锛?/p>
=25
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a
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b
鈭?/p>
R
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i
涓鸿櫄鏁板崟浣嶏級
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a
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鐨勫�间负
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3
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5
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150
銆?/p>
150
銆?/p>
400
銆?/p>
300
鍚嶅鐢燂紝
涓轰簡瑙ｅ鐢熺殑灏变笟鍊惧悜锛岀敤鍒嗗眰鎶芥牱鐨勬柟娉曚粠璇ユ牎杩欏洓涓笓涓氬叡鎶藉彇
40
鍚嶅鐢?/p>
杩涜璋冩煡锛屽簲鍦ㄤ笝涓撲笟鎶藉彇鐨勫鐢熶汉鏁颁负
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4
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5
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y
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鍒欒緭鍏?/p>
x
鐨勫�间负
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5
锛?/p>
锛?/p>
5
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f
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x
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=
鐨勫畾涔夊煙涓?/p>
D
锛庤嫢鍦ㄥ尯闂?/p>
[
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5
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5
]
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x
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x
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D
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6
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5
鍒嗭級鍦ㄥ钩闈㈢洿瑙掑潗鏍囩郴
xOy
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锕?
=1
鐨勭劍鐐瑰埌鍏舵笎杩戠嚎鐨勮窛
绂讳负
锛?/p>
7
锛?/p>
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5
鍒嗭級宸茬煡瀹炴暟
x
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锛屽垯
z=3x
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2y
鐨勬渶澶у�间负
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8
锛?/p>
锛?/p>
5
鍒嗭級灏嗕竴涓鏂瑰舰缁曠潃瀹冪殑涓�杈规墍鍦ㄧ殑鐩寸嚎鏃嬭浆涓�鍛紝鎵�寰楀渾鏌辩殑浣撶Н涓?/p>
27蟺cm
3
锛屽垯璇ュ渾鏌辩殑渚ч潰绉负
cm
2
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9
锛?/p>
锛?/p>
5
鍒嗭級鑻ュ嚱鏁?/p>
f
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x
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=Asin
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A
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0
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蠅
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0
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|
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|
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