已知函数f(x)=(1+cotx)sin²x+msin(x+π/4)× sin(x-π/4)(1)当m=0时,求f(x)在区间[ π/8 ,3π/4 ]上的取值范围(2)当tanα=2时,f(α)=3/5,求m的值
问题描述:
已知函数f(x)=(1+cotx)sin²x+msin(x+π/4)× sin(x-π/4)
(1)当m=0时,求f(x)在区间[ π/8 ,3π/4 ]上的取值范围
(2)当tanα=2时,f(α)=3/5,求m的值
答