已知函数f(x)=k•a
-x(k,a为常数,a>0且a≠1)的图象过点A(0,1),B(3,8).
(1)求实数k,a的值;
(2)若函数
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102238571957050/SYS201311031022385719570016_ST/0.png)
,试判断函数g(x)的奇偶性,并说明理由.
考点分析:
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x-1,若关于x的方程f(x)-log
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设函数f(x)=(x-a)(x-b)(x-c)(a、b、c是两两不等的常数),则
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若函数
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102238571957050/SYS201311031022385719570013_ST/0.png)
的图象上任意点处切线的倾斜角为a,则a的最小值是
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已知f(x)=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102238571957050/SYS201311031022385719570012_ST/0.png)
则f(log
23)=
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定义在(-1,1)上的函数
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;当x∈(-1,0)时,f(x)>0,若
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,则P,Q,R的大小关系为( )
A.R>Q>P
B.R>P>Q
C.P>R>Q
D.Q>P>R
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