1.在三角形ABC中,AE是角BAC的平分线,向量AB=a,向量AC=b,则向量AE=多少?2.三角形ABC的外心O,垂心H,试用向量OA,向量OB,向量OC表示向量OH3.已知P是三角形ABC所在平面上一点,问点P在何处时,向量PA+向量PB+
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/04 11:54:29
![1.在三角形ABC中,AE是角BAC的平分线,向量AB=a,向量AC=b,则向量AE=多少?2.三角形ABC的外心O,垂心H,试用向量OA,向量OB,向量OC表示向量OH3.已知P是三角形ABC所在平面上一点,问点P在何处时,向量PA+向量PB+](/uploads/image/z/954886-22-6.jpg?t=1.%E5%9C%A8%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E4%B8%AD%2CAE%E6%98%AF%E8%A7%92BAC%E7%9A%84%E5%B9%B3%E5%88%86%E7%BA%BF%2C%E5%90%91%E9%87%8FAB%3Da%2C%E5%90%91%E9%87%8FAC%3Db%2C%E5%88%99%E5%90%91%E9%87%8FAE%3D%E5%A4%9A%E5%B0%91%3F2.%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E7%9A%84%E5%A4%96%E5%BF%83O%2C%E5%9E%82%E5%BF%83H%2C%E8%AF%95%E7%94%A8%E5%90%91%E9%87%8FOA%2C%E5%90%91%E9%87%8FOB%2C%E5%90%91%E9%87%8FOC%E8%A1%A8%E7%A4%BA%E5%90%91%E9%87%8FOH3.%E5%B7%B2%E7%9F%A5P%E6%98%AF%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E6%89%80%E5%9C%A8%E5%B9%B3%E9%9D%A2%E4%B8%8A%E4%B8%80%E7%82%B9%2C%E9%97%AE%E7%82%B9P%E5%9C%A8%E4%BD%95%E5%A4%84%E6%97%B6%2C%E5%90%91%E9%87%8FPA%2B%E5%90%91%E9%87%8FPB%2B)
xUR`~/WHPW@Qhe-lWB7Ou3UvoTUC{_ܜY#su
VOҠ#{3t9O4WzU4#l2]ZyI3a}̣Qb3D993MCOZsPϼW75Ix9<U3`s z/Dl_?,2G<%["mOlE~&WD6ZY,o3c@_2&f*%Co=7H=v+H9>~NjUbEg0#p|lHjq4vi+@l/\HxaG_E_P~^7z&йߐa.
< ,a]e72=<Ԏݶyҳ/Bkeo 5C5Zityr+Lw
D}go7ROʛ&"kz*R(uw@@ ^OMADuR]Tf9u!c]̒y>&A