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函数y=f(x)的图象在点P(5,f(x))处的切线方程是y=-x+8,则f(5...
函数y=f(x)的图象在点P(5,f(x))处的切线方程是y=-x+8,则f(5)+f′(5)=( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100440986250487/SYS201311031004409862504005_ST/0.png)
B.1
C.2
D.0
考点分析:
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