2019-2020
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6.3
涓�娆″嚱鏁扮殑鍥惧儚瀵煎妗?/p>
1
锛堟柊鐗堬級鑻忕鐗?/p>
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.
瀛︿範杩囩▼锛?/p>
涓�銆佹劅鎯呰皟鑺傦細
(1)
涓�娆″嚱鏁扮殑瀹氫箟锛?/p>
(2)
姝ｆ瘮渚嬪嚱鏁扮殑瀹氫箟锛?/p>
(3)
鍑芥暟鍥惧儚鐨勬蹇碉細
鎶婁竴涓嚱鏁扮殑鑷彉閲?/p>
涓庡搴旂殑鍥犲彉閲?/p>
鐨勫�间綔涓虹偣鐨?/p>
鍧愭爣鍜?/p>
鍧愭爣
锛屽湪
鐩磋鍧愭爣绯诲唴鎻忓嚭瀹冪殑瀵瑰簲鐐癸紝鎵�鏈夎繖浜涚偣缁勬垚鐨勫浘褰㈠彨鍋氳鍑芥暟
鐨勫浘鍍?/p>
.
浜屻�佽嚜瀛︽柊鐭ワ細
1.
鑷鍐呭锛堜竴锛?/p>
锛氳瀵熶功
P 148
椤电殑鍥剧墖
锛屾帰绱竴娆″嚱鏁扮殑鍥惧儚
.
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5
鍒嗛挓鍚庣缉鐭簡澶氬皯锛熺偣鐕?/p>
10
鍒嗛挓鍚庡憿锛?/p>
鈶?/p>
y
锛?/p>
cm
锛夎〃绀洪鐨勯暱搴︼紝
x
锛?/p>
min
锛夎〃绀洪鐕冪儳鐨勬椂闂达紝浣犺兘鍐欏嚭
y
涓?/p>
x
涔嬮棿鐨勫嚱鏁板叧绯诲紡鍚楋紵
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鈶?/p>
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2.
鑷鍐呭锛堜簩锛?/p>
锛氫綔涓�娆″嚱鏁扮殑鍥惧儚
鎸変笅鍒楁楠わ紝鍦ㄥ钩闈㈢洿瑙掑潗鏍囩郴涓紝鐢讳竴娆″嚱鏁?/p>
y
=2
x
+1
鐨勫浘鍍忥紟
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锛?/p>
1
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x
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-2
-1
0
1
2
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y
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x
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鈥?/p>
锛?/p>
2
锛夋弿鐐癸細浠ヨ〃涓悇瀵?/p>
x
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y
鐨勫�间负鐐圭殑鍧愭爣锛屽湪鐩磋
鍧愭爣绯诲唴鎻忓嚭鐩稿簲鐨勭偣锛?/p>
锛?/p>
3
锛夎繛绾匡細椤烘杩炴帴鎻忓嚭鐨勫悇鐐癸紟
璁竴璁?/p>
:
锛?/p>
1
锛夋弧瓒冲叧绯诲紡
y=2
x
+1
鐨?/p>
x
锛?/p>
y
鎵�瀵瑰簲鐨勭偣锛?/p>
x
锛?/p>
y
锛夐兘鍦?/p>
涓�娆″嚱鏁?/p>
y=2
x
+1
鐨勫浘璞′笂鍚楋紵
锛?/p>
2
锛変竴娆″嚱鏁?/p>
y=2x+1
鐨勫浘璞′笂鐨勭偣锛?/p>
x
锛?/p>
y
锛夐兘婊¤冻鍏崇郴寮?/p>
y=2x+1
鍚楋紵
锛?/p>
3
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.
瑙傚療
y
=2
x
+1
鐨勫浘鍍忓彲鐭ワ細瀹冪殑鍥惧儚鏄竴鏉?/p>
锛?/p>
涓?/p>
x
杞翠氦浜庣偣
锛屼笌
y
杞翠氦浜庣偣
锛?/p>
瀹冪粡杩?/p>
璞￠檺锛?/p>
灏忕粨锛氣憼浣滀竴娆″嚱鏁板浘鍍忕殑姝ラ锛?/p>
鐢辩洿绾跨殑鍏悊鍙煡锛?/p>
涓ょ偣纭畾涓�鏉＄洿绾匡紝
鎵�浠ヤ綔涓�
娆″嚱鏁扮殑鍥捐薄鏃讹紝
鍙纭畾鍥惧儚涓?/p>
鐨勪綅缃紝鍐嶈繃杩欎袱鐐圭敾鐩寸嚎鍗冲彲锛?/p>
鈶竴娆″嚱鏁?/p>
y
kx
b
飥?/p>
飥?/p>
锛?/p>
k
銆?/p>
b
涓哄父鏁帮紝涓?/p>
0
k
飩?/p>
锛夌殑鍥惧儚鏄粡杩囩偣
锛?/p>
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鍜岋紙
锛?/p>
0
锛夌殑涓�鏉?/p>
.
鈶?/p>
绫讳技鐨勪綘鑳藉緢蹇殑浣滃嚭姝ｆ瘮渚嬪嚱鏁?/p>
y
=
kx
锛?/p>
k
鈮?/p>
0
锛夌殑鍥捐薄鍚楋紵
浣滄姣斾緥鍑芥暟
y
=
kx
锛?/p>
k
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0
锛夌殑鍥捐薄鏃讹紝涓�鑸壘锛?/p>
0,
锛?/p>
锛?/p>
1
锛?/p>
锛変袱鐐?/p>
.
涓夈�佷緥棰樺涔狅細
渚?/p>
1.
浣滃嚭涓�娆″嚱鏁?/p>
2
5
y
x
飥?/p>
飥?/p>
飥?/p>
鐨勫浘鍍忥紝