化简:y=cos2x+2sinxcosx-sin2x
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/30 10:20:48
![化简:y=cos2x+2sinxcosx-sin2x](/uploads/image/z/5176983-39-3.jpg?t=%E5%8C%96%E7%AE%80%EF%BC%9Ay%3Dcos2x%2B2sinxcosx-sin2x)
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化简:y=cos2x+2sinxcosx-sin2x
化简:y=cos2x+2sinxcosx-sin2x
化简:y=cos2x+2sinxcosx-sin2x
y=cos2x+2sinxcosx-sin2x
=cos2x+2sinxcosx- 2sinxcosx
=cos2x
=2(cosx)^2-1