∵BE^2=AE^2-AB^2
且BE=BC-EC ,而EC=AE
∴(BC-AE)^2=AE^2-AB^2
即(4-AE)^2=AE^2-9
则 AE=25/8
则BE=BC-CE=BC-AE=4-25/8=7/8
∴△ABE的面积=1/2*AB*BE=0.5*3*7/8=7/16
∵BE^2=AE^2-AB^2
且BE=BC-EC ,而EC=AE
∴(BC-AE)^2=AE^2-AB^2
即(4-AE)^2=AE^2-9
则 AE=25/8
则BE=BC-CE=BC-AE=4-25/8=7/8
∴△ABE的面积=1/2*AB*BE=0.5*3*7/8=7/16