shpark
幼苗
共回答了30个问题采纳率:96.7% 举报
x^2+(2/x)^2=5
x^4- 5x^2+4=0
(x^2-1)(x^2-4)=0
x1=1 x2=2
y=-x+m
A(1,2)
OA: y=2x
2x=-x+m
x=m/3
C(m/3,2m/3)
A(2,1)
Ob: y=1/2x
1/2x=-x+m
x=2/3m
D(2m/3,m/3)
CD与X轴交于E
S△OCD
=S△OCE-S△ODE
=1/2*m*2m/3 - 1/2*m*m/3
=m^2/6
m^2/6=1
m=√6 ( -√6舍去)
1年前
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