如图,平行四边形ABCD中,AB=4,BC=3,∠BAD=120°,E为BC上一动点(不与B重合)作EF⊥AB于F,FE,DC的延长线交于点G,设BE=x,△DEF的面积为S.(1)求证:△BEF∽△CEG;(2)求用x表示S的函数表达式,并写出x的
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/17 03:04:04
![如图,平行四边形ABCD中,AB=4,BC=3,∠BAD=120°,E为BC上一动点(不与B重合)作EF⊥AB于F,FE,DC的延长线交于点G,设BE=x,△DEF的面积为S.(1)求证:△BEF∽△CEG;(2)求用x表示S的函数表达式,并写出x的](/uploads/image/z/7105142-38-2.jpg?t=%E5%A6%82%E5%9B%BE%2C%E5%B9%B3%E8%A1%8C%E5%9B%9B%E8%BE%B9%E5%BD%A2ABCD%E4%B8%AD%2CAB%3D4%2CBC%3D3%2C%E2%88%A0BAD%3D120%C2%B0%2CE%E4%B8%BABC%E4%B8%8A%E4%B8%80%E5%8A%A8%E7%82%B9%EF%BC%88%E4%B8%8D%E4%B8%8EB%E9%87%8D%E5%90%88%EF%BC%89%E4%BD%9CEF%E2%8A%A5AB%E4%BA%8EF%2CFE%2CDC%E7%9A%84%E5%BB%B6%E9%95%BF%E7%BA%BF%E4%BA%A4%E4%BA%8E%E7%82%B9G%2C%E8%AE%BEBE%3Dx%2C%E2%96%B3DEF%E7%9A%84%E9%9D%A2%E7%A7%AF%E4%B8%BAS%EF%BC%8E%EF%BC%881%EF%BC%89%E6%B1%82%E8%AF%81%EF%BC%9A%E2%96%B3BEF%E2%88%BD%E2%96%B3CEG%EF%BC%9B%EF%BC%882%EF%BC%89%E6%B1%82%E7%94%A8x%E8%A1%A8%E7%A4%BAS%E7%9A%84%E5%87%BD%E6%95%B0%E8%A1%A8%E8%BE%BE%E5%BC%8F%2C%E5%B9%B6%E5%86%99%E5%87%BAx%E7%9A%84)
xVmSW+d,+M}#,,ڪ4N?QVtӉLLUGc.f?r?zQi?/p=LQiXCd{sYDm0*h F,7L/đܧ>0-dggt633`J_3SWٜ_foJansraBOin