问题标题：
2sin(0.25πx-0.75π)+8-2sin(0.25πx-0.25π)-6的化简过程
问题描述：
2sin(0.25πx-0.75π)+8-2sin(0.25πx-0.25π)-6的化简过程
李守鹏回答：
2sin(0.25πx-0.75π)+8-2sin(0.25πx-0.25π)-6
=2sin(0.25πx-0.25π-0.5π)-2sin(0.25πx-0.25π)+2
=-2cos(0.25πx-0.25π)-2sin(0.25πx-0.25π)+2
=-2√2[√2/2cos(0.25πx-0.25π)+√2/2sin(0.25πx-0.25π)]+2
=-2√2sin(0.25πx)+2
点击显示
数学推荐
热门数学推荐