答案:当 X=1/2时,Y值最大,Y = 1/4
因为角BAE = 角EDH = 90,角ABE = 角DEH,所以三角形BAE相似于三角形EDH
所以有:BA/AE = ED/DH,即:1/X = (1-X)/Y,所以:Y = X-X^2 = 1/4-(X-1/2)^2
所以当 X=1/2时,Y值最大,Y = 1/4
答案:当 X=1/2时,Y值最大,Y = 1/4
因为角BAE = 角EDH = 90,角ABE = 角DEH,所以三角形BAE相似于三角形EDH
所以有:BA/AE = ED/DH,即:1/X = (1-X)/Y,所以:Y = X-X^2 = 1/4-(X-1/2)^2
所以当 X=1/2时,Y值最大,Y = 1/4