Question

对函数f(x)=sinx及f(x)=x+cosx在区间[0,π/2]

高等数学-柯西中值定理
对函数f(x)=sinx及F(x)=x+cosx在区间[0,π/2]上验证柯西中值定理的正确性（详细的步骤）.

Answer 1

f(π/2)-f(0)=1
F(π/2)-f(0)=π/2-1
[F(π/2)-F(0)]/[f(π/2)-f(0)]=π/2-1
g(x)=F`(x)/f`(x)=secx-tanx
g`(x)=tanxsecx-sec^2(x)=sec(x)[tanx-secx]