设f0(x) = sinx,f1(x)=f0′(x),f2(x)=f1′(x),
题型:选择题
问题:
设f0(x) = sinx,f1(x)=f0′(x),f2(x)=f1′(x),…,fn+1(x) = fn′(x),n∈N,则
f2005(x)=
A.sinx
B.-sinx
C.cosx
D.-cosx
设f0(x) = sinx,f1(x)=f0′(x),f2(x)=f1′(x),…,fn+1(x) = fn′(x),n∈N,则
f2005(x)=
A.sinx
B.-sinx
C.cosx
D.-cosx