已知f0(x)=cosx-sinx,且f1(x)=f′0(x),f2(x)=f′ 发布时间:2017-05-12 23:49 │ 来源:www.tikuol.com 题型:填空题 问题: 已知f0(x)=cosx-sinx,且f1(x)=f′0(x),f2(x)=f′1(x),…,fn(x)=f′n-1 (x)则f2012(x)=______.