已知x^2+y^2-8x+12y+52=0 ,求1/2x-1/x-y(x-y/2x-x^2+y^2)
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已知x^2+y^2-8x+12y+52=0,求1/2x-1/x-y(x-y/2x-x^2+y^2)已知x^2+y^2-8x+12y+52=0,求1/2x-1/x-y(x-y/2x-x^2+y^2)已知
已知x^2+y^2-8x+12y+52=0 ,求1/2x-1/x-y(x-y/2x-x^2+y^2)
已知x^2+y^2-8x+12y+52=0 ,求1/2x-1/x-y(x-y/2x-x^2+y^2)
已知x^2+y^2-8x+12y+52=0 ,求1/2x-1/x-y(x-y/2x-x^2+y^2)
1/2x-1/x-y(x-y/2x-x^2+y^2)不是=1/x-y(x-y/2x-x^2+y^2)吗
x^2+y^2-8x+12y+52=0=(X-4)^2+(y+6)^2
得x=4 y=-6
代入就行了
已知x^2+y^2-8x+12y+52=0 ,求1/2x-1/x-y(x-y/2x-x^2+y^2)
已知x^2+y^2-8x+12y+52=0 ,求1/2x-1/x-y(x-y/2x-x^2+y^2)
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