已知f(x)=lg
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102024845480082/SYS201311031020248454800020_ST/0.png)
,a,b∈(-1,1),求证:f(a)+f(b)=f(
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102024845480082/SYS201311031020248454800020_ST/1.png)
)
考点分析:
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已知幂函数y=f(x)的图象过点
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,求出此函数的解析式,并判断并证明f(x)的奇偶性.
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根据如图的图象说出函数的单调区间,以及在每一个区间上函数的单调性.
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,
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(2)当x=14时,求f(x)的值;
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比较下列两数大小
(1)
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.
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计算题:
(1)
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102024845480082/SYS201311031020248454800015_ST/0.png)
;
(2)log
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![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102024845480082/SYS201311031020248454800015_ST/1.png)
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