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1、名师整理精华知识点第二章基本初等函数一、指数函数（一）指数与指数幂的运算1根式的概念：一般地，如果axn，那么x叫做a的n次方根，其中n1，且nN*负数没有偶次方根；0 的任何次方根都是0，记作00n。当n是奇数时，aann，当n是偶数时，)0()0(|aaaaaann2分数指数幂正数的分数指数幂的意义，规定：)1,0(*nNnmaaanmnm，)1,0(11*nNnmaaaanmnmnm0 的正分数指数幂等于0，0 的负分数指数幂没有意义3实数指数幂的运算性质（1）rasrraa),0(Rsra；（2）rssraa)(),0(Rsra；（3）srraaab)(),0(Rsra（二）指数函数及
2、其性质1、指数函数的概念：一般地，函数)1,0(aaayx且叫做指数函数，其中x 是自变量，函数的定义域为R注意：指数函数的底数的取值范围，底数不能是负数、零和12、指数函数的图象和性质a1 0a1 0a0，a0，函数 y=ax与 y=loga(-x)的图象只能是()2.计算：64log2log273 ;3log422=；2log227log553125=;文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E
3、3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8
4、G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9
5、I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K
6、1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5
7、O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10
8、J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L
9、3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9名师整理精华知识点21343101.016)2()87(064.075.030 =3.函数 y=log21(2x2-3x+1)的递减区间为4.若函数)10(log)(axxfa在区间2,aa上的最大值是最小值的3 倍，则 a=5.已知1()log(01)1axf xaax且，（1）求()f x的定义域（2）求使()0fx的x的取值范围.文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文
10、档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5
11、I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2
12、V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M
13、9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5
14、C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3
15、W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9文档编码:CB5O8G5C5I1 HR10J9I3W2V1 ZZ4L3K1E3M9