满分5 >
高中数学试题 >
如图函数y=f(x)的图象在点P处的切线的方程为y=-2x+9,则f(4)+f'...
如图函数y=f(x)的图象在点P处的切线的方程为y=-2x+9,则f(4)+f'(4)的值是( )
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230229077567400/SYS201311012302290775674006_ST/images0.png)
A.-2
B.1
C.2
D.-1
考点分析:
相关试题推荐
已知
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230229077567400/SYS201311012302290775674005_ST/0.png)
,则f(1)+f(2)+…+f(2011)的值为( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230229077567400/SYS201311012302290775674005_ST/1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230229077567400/SYS201311012302290775674005_ST/2.png)
C.1
D.0
查看答案
曲线y=x
3-3x
2有一条切线与直线3x+y=0平行,则此切线方程为( )
A.x-3y+1=0
B.3x+y+5=0
C.3x-y-1=0
D.3x+y-1=0
查看答案
设f(n)=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230229077567400/SYS201311012302290775674003_ST/0.png)
+
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230229077567400/SYS201311012302290775674003_ST/1.png)
+
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230229077567400/SYS201311012302290775674003_ST/2.png)
+…+
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230229077567400/SYS201311012302290775674003_ST/3.png)
(n∈N*),那么f(n+1)-f(n)等于( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230229077567400/SYS201311012302290775674003_ST/4.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230229077567400/SYS201311012302290775674003_ST/5.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230229077567400/SYS201311012302290775674003_ST/6.png)
+
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230229077567400/SYS201311012302290775674003_ST/7.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230229077567400/SYS201311012302290775674003_ST/8.png)
-
查看答案
在(-∞,+∞)内,f'(x)>0是f(x)在(-∞,+∞)内单调的( )
A.充分而不必要条件
B.必要而不充分条件
C.充要条件
D.既不充分也不必要条件
查看答案
函数y=xcosx-sinx的导数为( )
A.xsin
B.-xsin
C.xcos
D.-xcos
查看答案