6-4x-x^2=5/|sin(y/x)cos(y/x)|的解

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6-4x-x^2=5/|sin(y/x)cos(y/x)|的解6-4x-x^2=5/|sin(y/x)cos(y/x)|的解6-4x-x^2=5/|sin(y/x)cos(y/x)|的解6-4x-x^

6-4x-x^2=5/|sin(y/x)cos(y/x)|的解
6-4x-x^2=5/|sin(y/x)cos(y/x)|的解

6-4x-x^2=5/|sin(y/x)cos(y/x)|的解
6-4x-x^2=5/|sin(y/x)cos(y/x)|
10-(x+2)^2=10/|sin(2y/x)|>=10
(x+2)^2=0
所以:只能x+2=0
x=-2
所以:|sin(y/x)|=1
sin(y/x)=+ -1
y/x=n*pi+(pi/2)
y=(2n+1)*pi,其中n为任意整数