16x^2+y^2=25x^2/(25/16)+y^2/25=125>25/16y^2/25+x^2/(25/16)=1∴a^2=25b^2=25/16a=5b=5/4c^2=375/16c=5√15/4长轴=2a=10短轴=2b=5/2离心率e=c/a=√15/4焦点坐标(0,5√15/4),(0,-5√15/4)顶点坐标(0,5),(0,-5),(-5/...