fx=2sinx·(sinx+cosx)化简过程
问题描述：
fx=2sinx·(sinx+cosx)化简过程
答
fx=2sin^2x+2sinxcosx=1-cos2x+sin2x=1+√2sin(2x-π/4)
fx=2sinx·(sinx+cosx)化简过程
fx=2sin^2x+2sinxcosx=1-cos2x+sin2x=1+√2sin(2x-π/4)