高一数学必修一函数:定区间动图象，定图象定区间，定区间定图象，给图像求最值的题型 高中数学必修一有关函数图像题目
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\u3000\u3000\u5728\u4e00\u4e2a\u666e\u901a\u5bf9\u6570\u5f0f\u91cc a<0,\u6216=1 \u7684\u65f6\u5019\u662f\u4f1a\u6709\u76f8\u5e94b\u7684\u503c\u7684\u3002\u4f46\u662f\uff0c\u6839\u636e\u5bf9\u6570\u5b9a\u4e49: logaa=1\uff1b\u5982\u679ca=1\u6216=0\u90a3\u4e48logaa\u5c31\u53ef\u4ee5\u7b49\u4e8e\u4e00\u5207\u5b9e\u6570\uff08\u6bd4\u5982log1 1\u4e5f\u53ef\u4ee5\u7b49\u4e8e2\uff0c3\uff0c4\uff0c5\uff0c\u7b49\u7b49\uff09\u7b2c\u4e8c\uff0c\u6839\u636e\u5b9a\u4e49\u8fd0\u7b97\u516c\u5f0f\uff1aloga M^n = nloga M \u5982\u679ca<0,\u90a3\u4e48\u8fd9\u4e2a\u7b49\u5f0f\u4e24\u8fb9\u5c31\u4e0d\u4f1a\u6210\u7acb \uff08\u6bd4\u5982\uff0clog(-2) 4^(-2) \u5c31\u4e0d\u7b49\u4e8e(-2)*log(-2) 4\uff1b\u4e00\u4e2a\u7b49\u4e8e4\uff0c\u53e6\u4e00\u4e2a\u7b49\u4e8e-4\uff09
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\u3000\u3000\uff081\uff09log(a)(MN)=log(a)(M)+log(a)(N);
\u3000\u3000\uff082\uff09log(a)(M/N)=log(a)(M)-log(a)(N);
\u3000\u3000\uff083\uff09log(a)(M^n)=nlog(a)(M) \uff08n\u5c5e\u4e8eR\uff09
2.\u6307\u6570\u51fd\u6570
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3.\u5e42\u51fd\u6570
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\u3000\u3000\uff086\uff09\u663e\u7136\u5e42\u51fd\u6570\u65e0\u754c\u9650\u3002
1
2
\u7b2c1\u9898\u56fe
\u7b2c\u4e8c\u8bb2 \u51fd\u6570\u56fe\u8c61
\u3010\u8003\u9898\u56de\u653e\u3011
1\uff0e\u56fe\u4e2d\u7684\u56fe\u8c61\u6240\u8868\u793a\u7684\u51fd\u6570\u7684\u89e3\u6790\u5f0f\u4e3a\uff08\u3000\u3000\uff09
A\uff0e \u3000 \u3000 B\uff0e \u3000
C\uff0e D\uff0e
1
2
3
60
80
100
120
140
160
t(h)
s(km)
1
2
3
60
80
100
120
140
160
t(h)
s(km)
1
2
3
60
80
100
120
140
160
t(h)
s(km)
1
2
3
60
80
100
120
140
160
t(h)
s(km)
A\uff0e
B\uff0e
C\uff0e
D\uff0e
0
0
0
0
0
2\uff0e\u5ba2\u8f66\u4ece\u7532\u5730\u4ee560km/h\u7684\u901f\u5ea6\u5300\u901f\u884c\u9a761\u5c0f\u65f6\u5230\u8fbe\u4e59\u5730\uff0c\u5728\u4e59\u5730\u505c\u7559\u4e86\u534a\u5c0f\u65f6\uff0c\u7136\u540e\u4ee580km/h\u7684\u901f\u5ea6\u5300\u901f\u884c\u9a761\u5c0f\u65f6\u5230\u8fbe\u4e19\u5730\uff0e\u4e0b\u5217\u63cf\u8ff0\u5ba2\u8f66\u4ece\u7532\u5730\u51fa\u53d1\uff0c\u7ecf\u8fc7\u4e59\u5730\uff0c\u6700\u540e\u5230\u8fbe\u4e19\u5730\u6240\u7ecf\u8fc7\u7684\u8def\u7a0b \u4e0e\u65f6\u95f4 \u4e4b\u95f4\u5173\u7cfb\u7684\u56fe\u8c61\u4e2d\uff0c\u6b63\u786e\u7684\u662f\uff08\u3000C\u3000\uff09
3\uff0e\u51fd\u6570 \u7684\u56fe\u8c61\u548c\u51fd\u6570 \u7684\u56fe\u8c61\u7684\u4ea4\u70b9\u4e2a\u6570\u662f\uff08 B \uff09
A\uff0e4 B\uff0e3 C\uff0e2 D\uff0e1
4\uff0e\u82e5\u51fd\u6570 \u7684\u56fe\u8c61\u6309\u5411\u91cf \u5e73\u79fb\u540e\uff0c\u5f97\u5230\u51fd\u6570 \u7684\u56fe\u8c61\uff0c\u5219\u5411\u91cf \uff08 A \uff09
A\uff0e B\uff0e C\uff0e D\uff0e
5\uff0e\u82e5\u51fd\u6570 \u7684\u53cd\u51fd\u6570\u4e3a \uff0c\u5219\u51fd\u6570 \u4e0e \u7684\u56fe\u8c61\u53ef\u80fd\u662f\uff08 A \uff09
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
\u3000\u3000\u3000A\uff0e\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000B\uff0e\u3000\u3000\u3000\u3000\u3000\u3000\u3000C\uff0e\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000D\uff0e
\uff08\u6beb\u514b\uff09
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6\uff0e \uff1b0.6
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见图
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绛旓細(2)鏃犵┓鍖洪棿 (3)鍖洪棿鐨勬暟杞磋〃绀. 5.鏄犲皠 涓鑸湴,璁続銆丅鏄袱涓潪绌虹殑闆嗗悎,濡傛灉鎸夋煇涓涓‘瀹氱殑瀵瑰簲娉曞垯f,浣垮浜庨泦鍚圓涓殑浠绘剰涓涓厓绱爔,鍦ㄩ泦鍚圔涓兘鏈夊敮 閫氳繃涓婇潰鐨楂樹竴鏁板蹇呬慨1鐭ヨ瘑鐐规荤粨,鍚屽浠凡缁忔⒊鐞嗕簡涓閬嶉珮涓鏁板蹇呬慨1鐨勭煡璇嗙偣,涔熷姞娣变簡瀵硅鐭ヨ瘑鐨勬洿娣变簡瑙,鐩镐俊鍚屽浠竴瀹氳兘瀛﹀ソ杩欓儴鍒嗙煡璇嗙偣,涔熷笇...
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绛旓細http://wenku.baidu.com/view/bb509cc75fbfc77da269b1ba.html 楂樹腑鏁板蹇呬慨1鈥斿繀淇5鐭ヨ瘑鐐规荤粨
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