根号(OA平方-5)+OC平方-4×OC+4=0,
(OA-5)^2+(OC-2)^2=0,
OA=5,OC=2,
∴OB=√(OA^2+BC^2)=√29,
设AE=m,则BE=2-m,
在RTΔAED中,DE=BE=2-m,
AD=OD-OA=OB-OA=√29-5,
根据勾股定理得:
(2-m)^2=m^2+(√29-5)^2,
4-4m+m^2=m^2+54-10√29,
m=(5√29-25)/2,
∴E(5,(5√29-25)/2).
根号(OA平方-5)+OC平方-4×OC+4=0,
(OA-5)^2+(OC-2)^2=0,
OA=5,OC=2,
∴OB=√(OA^2+BC^2)=√29,
设AE=m,则BE=2-m,
在RTΔAED中,DE=BE=2-m,
AD=OD-OA=OB-OA=√29-5,
根据勾股定理得:
(2-m)^2=m^2+(√29-5)^2,
4-4m+m^2=m^2+54-10√29,
m=(5√29-25)/2,
∴E(5,(5√29-25)/2).