sin^3x-cos^3x化简等于多少
来源:学生作业帮助网 编辑:作业帮 时间:2024/10/06 22:46:41
x)+̋3M/RO{=_|m]}OzaMR>A5v6d E*4AL5eCs
m(HPH@415i$ف )\%
sin^3x-cos^3x化简等于多少
sin^3x-cos^3x化简等于多少
sin^3x-cos^3x化简等于多少
sin^3x-cos^3x
=(sinx-cosx)(sin²x+sinxcosx+cos²x)
=(sinx-cosx)(1+sinxcosx)