Chrome，
QQ浏览器
-
-
![三角形的四心与平面向量，学会这些，得分轻而易举[高一春季3]](//imgshow.1ydt.com/img?url=%2F%2Fi0.hdslb.com%2Fbfs%2Farchive%2F572a09145d72f54f91c7094ba237ace7e189c670.jpg%40672w_378h_1c_%21web-search-common-cover)
-
-
-
-
-
-
-
-
![人教A高中数学必修四2.3.2 平面向量的正交分解及坐标表示[陈琳]【市一等奖】优质课](//imgshow.1ydt.com/img?url=%2F%2Fi2.hdslb.com%2Fbfs%2Farchive%2Febe01f2bdce2762337e1216766970b03da32cc7d.jpg%40672w_378h_1c_%21web-search-common-cover)
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
![人教A高中数学必修四2.3.3 平面向量的坐标运算[王偲陈]【市一等奖】优质课](//imgshow.1ydt.com/img?url=%2F%2Fi1.hdslb.com%2Fbfs%2Farchive%2Fc84924d3f019c1daee8d61cae4b3fd33e9134b4b.jpg%40672w_378h_1c_%21web-search-common-cover)
-
-
-
-
-
![人教A高中数学必修四2.3.1 平面向量基本定理[何鹏飞]【市一等奖】优质课](//imgshow.1ydt.com/img?url=%2F%2Fi2.hdslb.com%2Fbfs%2Farchive%2Fef3ec3fcc83f42203339af1a9ec2d6569c74d6bc.jpg%40672w_378h_1c_%21web-search-common-cover)
-
-
-
-
-
-
-
-
-
-
播放：23 时间：2024-06-19简介： -
.
![三角形的四心与平面向量，学会这些，得分轻而易举[高一春季3]](http://imgshow.1ydt.com/img?url=%2F%2Fi0.hdslb.com%2Fbfs%2Farchive%2F572a09145d72f54f91c7094ba237ace7e189c670.jpg%40672w_378h_1c_%21web-search-common-cover)
![人教A高中数学必修四2.3.2 平面向量的正交分解及坐标表示[陈琳]【市一等奖】优质课](http://imgshow.1ydt.com/img?url=%2F%2Fi2.hdslb.com%2Fbfs%2Farchive%2Febe01f2bdce2762337e1216766970b03da32cc7d.jpg%40672w_378h_1c_%21web-search-common-cover)
![人教A高中数学必修四2.3.3 平面向量的坐标运算[王偲陈]【市一等奖】优质课](http://imgshow.1ydt.com/img?url=%2F%2Fi1.hdslb.com%2Fbfs%2Farchive%2Fc84924d3f019c1daee8d61cae4b3fd33e9134b4b.jpg%40672w_378h_1c_%21web-search-common-cover)
![人教A高中数学必修四2.3.1 平面向量基本定理[何鹏飞]【市一等奖】优质课](http://imgshow.1ydt.com/img?url=%2F%2Fi2.hdslb.com%2Fbfs%2Farchive%2Fef3ec3fcc83f42203339af1a9ec2d6569c74d6bc.jpg%40672w_378h_1c_%21web-search-common-cover)
.