2020
21.2
瑙ｄ竴鍏冧簩娆℃柟绋?/p>
21.2.1
閰嶆柟娉?/p>
绗?/p>
1
璇炬椂
鐢ㄧ洿鎺ュ紑骞虫柟娉曡В涓�鍏冧簩娆℃柟绋?/p>
鈥绘暀瀛︾洰鏍団�?/p>
銆愮煡璇嗕笌鎶�鑳姐�?/p>
1.
浼氬埄鐢ㄧ洿鎺ュ紑骞虫柟娉曡В褰㈠
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2
0
x
p
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鐨勪竴鍏冧簩娆℃柟绋?/p>
.
2.
鍒濇浜嗚В褰㈠
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2
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x
n
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鐨勬柟绋嬬殑瑙ｆ硶
.
3.
鑳芥牴鎹叿浣撻棶棰樼殑瀹為檯鎰忎箟妫�楠岀粨鏋滅殑鍚堢悊鎬?/p>
.
銆愯繃绋嬩笌鏂规硶銆?/p>
鍦ㄥ涔犱笌鎺㈢┒涓槸瀛︾敓浣撲細绫绘瘮銆佽浆鍖栥�侀檷娆＄殑鏁板鎬濇兂鍙婅繍鐢ㄧ被姣旇繘琛屽涔犵殑鏂规硶
.
銆愭儏鎰熸�佸害銆?/p>
浣垮鐢熷湪瀛︿範涓綋浼氭剦鎮︿笌鎴愬姛鎰燂紝鎰熷彈鏁板瀛︿範鐨勪环鍊硷紟
銆愭暀瀛﹂噸鐐广�?/p>
鐔熺粌鑰屽噯纭湴杩愮敤鐩存帴寮�骞虫柟娉曟眰瑙ｄ竴鍏冧簩娆℃柟绋嬶紟
銆愭暀瀛﹂毦鐐广�?/p>
鎺㈢┒
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鐨勮В鐨勬儏鍐碉紝鍩瑰吇鍒嗙被瑕佽鐨勬�濇兂锛?/p>
鈥绘暀瀛﹁繃绋嬧�?/p>
涓�銆佸涔犲鍏?/p>
濡傛灉
2
x
a
=
锛岄偅涔?/p>
x
鍙仛
a
鐨?/p>
锛岃浣?/p>
锛涘鏋?/p>
2
4
x
=
锛岄偅涔堣浣?/p>
锛?/p>
3
鐨勫钩
鏂规牴鏄?/p>
锛?/p>
0
鐨勫钩鏂规牴鏄?/p>
锛?/p>
-6
鐨勫钩鏂规牴鏄?/p>
.
浜屻�佹帰绱㈡柊鐭?/p>
鎺㈢┒闂
涓�妗舵补婕嗗彲鍒风殑闈㈢Н涓?/p>
1500dm
2
锛?/p>
鏉庢灄鐢ㄨ繖妗舵补婕嗘伆濂藉埛瀹?/p>
10
涓悓鏍风殑姝ｆ柟浣撳舰鐘剁殑鐩掑瓙鐨勫叏閮?/p>
澶栬〃闈紝浣犺兘绠楀嚭鐩掑瓙鐨勬１闀垮悧澶э紵
鏁欏笀璁剧疆濡備笅闂瀛︾敓璁ㄨ锛?/p>
濡傛灉璁句竴涓洅瀛愮殑妫遍暱涓?/p>
x
dm
锛屽垯瀹冪殑澶栬〃闈㈢Н涓哄灏戯紵
10
涓繖绉嶇洅瀛愮殑澶栬〃闈㈢Н鐨勫拰涓哄灏戯紵鐢辨鍙緱
鍒扮殑鏂圭▼鍙堟槸鎬庢牱鐨勶紵浣犺兘姹傚嚭瀹冪殑瑙ｅ悧锛?/p>
璁ㄨ缁撴灉锛氳鍏朵腑涓�涓洅瀛愮殑妫遍暱涓?/p>
x
dm
锛屽垯杩欎釜鐩掑瓙鐨勮〃闈㈢Н涓?/p>
2
6
x
dm
2
.
鏍规嵁涓�妗舵补婕嗗彲鍒风殑闈㈢Н锛屽垪鍑?
鏂圭▼
2
10
6
1500
x
?
.
鏁寸悊锛屽緱
2
25
x
=
.
鏍规嵁骞虫柟鏍圭殑鎰忎箟锛屽緱
5
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锛屽嵆
1
5
x
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锛?/p>
2
5
x
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-
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鍙互楠岃瘉锛?/p>
5
鍜?/p>
-5
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绋嬬殑涓や釜鏍癸紝鍥犱负妫遍暱涓嶈兘鏄礋鍊硷紝鎵�浠ョ洅瀛愮殑妫遍暱涓?/p>
5dm.
褰掔撼鎬荤粨
涓�鑸湴锛屽浜庢柟绋?/p>
2
x
p
=
锛?/p>
锛堚厾锛?/p>
锛?/p>
1
锛夊綋
0
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鏃讹紝鏍规嵁骞虫柟鏍圭殑鎰忎箟锛屾柟绋嬶紙鈪狅級鏈変袱涓笉鐩哥瓑鐨勫疄鏁版牴
1
x
p
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锛?/p>
2
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锛?/p>
锛?/p>
2
锛夊綋
0
p
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鏃讹紝鏂圭▼锛堚厾锛夋湁涓や釜鐩哥瓑鐨勫疄鏁版牴
1
2
0
x
x
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锛?/p>
锛?/p>
3
锛夊綋
0
p
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鏃讹紝鍥犱负瀵逛换鎰忓疄鏁?/p>
x
锛岄兘鏈?/p>
2
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鲁
锛屾墍浠ユ柟绋嬶紙鈪狅級鏃犲疄鏁版牴
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瀛︾敓鎬濊�?/p>
瀵圭収涓婇潰瑙ｆ柟绋嬶紙鈪狅級鐨勮繃绋嬶紝浣犺涓哄簲鎬庢牱瑙ｆ柟绋?/p>
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2
3
5
x
+
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锛?/p>
瀛︾敓閫氳繃姣旇緝瀹冧笌鏂圭▼
2
25
x
=
鐨勫紓鍚岋紝浠庤�岃幏寰楄В涓�鍏冧簩娆℃柟绋嬬殑鎬濊矾
.