问题描述：
求高手帮看简单的lingo程序.
data:xA=300;yA=300;enddatamin=((x^2+y^2-R^2)^(1/2)+((xA-x)^2+(yA-y)^2-R^2)^(1/2))/5+(R*(1+@exp(10-0.1*R^2))*(2*@pi()-@acos((x^2+y^2+(xA-x)^2+(yA-y)^2-xA^2-yA^2)/(2*((x^2+y^2)^(1/2))*(((xA-x)^2+(yA-y)^2)(1/2))))-@acos(R/((x^2+y^2)^(1/2)))-@acos(R/(((xA-x)^2+(yA-y)^2)^(1/2)))))/5(@atan(y/x)+@asin(R/((x^2+y^2)(1/2))))>=0.4*@pi();(@atan(y/x)+@asin(R/((x^2+y^2)(1/2))))
data:xA=300;yA=300;enddatamin=((x^2+y^2-R^2)^(1/2)+((xA-x)^2+(yA-y)^2-R^2)^(1/2))/5+(R*(1+@exp(10-0.1*R^2))*(2*@pi()-@acos((x^2+y^2+(xA-x)^2+(yA-y)^2-xA^2-yA^2)/(2*((x^2+y^2)^(1/2))*(((xA-x)^2+(yA-y)^2)(1/2))))-@acos(R/((x^2+y^2)^(1/2)))-@acos(R/(((xA-x)^2+(yA-y)^2)^(1/2)))))/5(@atan(y/x)+@asin(R/((x^2+y^2)(1/2))))>=0.4*@pi();(@atan(y/x)+@asin(R/((x^2+y^2)(1/2))))
问题解答：
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