f(x)=(sinx+cosx)e^x
f'(x) = 2(cosx).e^x =0
注意题上是极大值之和,所以x=2nπ + π/2
x = (π/2) ,(5π/2),(7π/2),...,(4025π/2)
加起来=(1007*2013π)/2
f(x)=(sinx+cosx)e^x
f'(x) = 2(cosx).e^x =0
注意题上是极大值之和,所以x=2nπ + π/2
x = (π/2) ,(5π/2),(7π/2),...,(4025π/2)
加起来=(1007*2013π)/2