大家好,今天小热关注到一个比较有意思的话题,就是关于360kk的问题,于是小编就整理了3个相关介绍360kk的解答,让我们一起看看吧。
文章目录:
一、关于KK55的游戏和360的问题
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二、IE被5566KK劫持,360清了重启后自动恢复,求解决!
用金山急救箱。
进入安全模式,再用360过滤一下。找到此病毒文件,直接删除或者粉粹!还要查找出所有相关的注册表文件,全部删除之就可以了。
开机的时候逛按F8就可以进入安全模式了。
按F8进入安全模式全盘杀毒,(安全模式下你就可以把桌面图标删除)杀完毒后下载一个“黄山IE修复专家”修复一下,在修复过程中会提醒你要账号要付费不用管它继续既可以了等修复完成后就彻底ok了。
三、cos(4x+15)=cos(2x-15) 求x 的值!!! x 大于等于0,小于等于360...
∵cos(4x+15°)=cos(2x-15°),
∴4x+15°=2x-15°+k·360°或4x+15°=-(2x-15°)+k·360°,k∈Z,
解得x=-15°+k·180°或x=k·60°,k∈Z,
∵0°≤x≤360°,
∴x=165°,345°,0°,60°,120°,180°,240°,300°,360°。
cos(4x+15)=cos(2x-15)
(4x+15)=(360k+2x-15)
2x=360k-30
k=1 x=165
k=2 x=345
或(4x+15)=360k-(2x-15)
6x=360k
k=0 x=0
k=1 x=60
k=2 x=120
k=3 x=180
k=4 x=240
k=5 x=300
k=6 x=360
郭敦顒回答:
x和15的单位都是角度单位“°”,行文中均省略了单位。
当x=165时,cos(4x+15)= cos(660+15)= cos(675-360)=cos315,
cos(2x-15)= cos(330-15)=cos315,
∴cos(4x+15)=cos(2x-15),x=165正确;
当x=345时,cos(4x+15)= cos(1380+15)= cos(1395-360×3)cos315,
cos(2x-15) =cos(690-15)=cos(675-360)=cos315,
∴cos(4x+15)=cos(2x-15),x=345正确。
到此,以上就是小编对于360kk的问题就介绍到这了,希望介绍关于360kk的3点解答对大家有用。
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