已知实数x,y满足2x+y-2≥0 x-2y+4≥0 3x-y-3≤0 ,则x^2+y^2的最小值为
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已知实数x,y满足2x+y-2≥0 x-2y+4≥0 3x-y-3≤0 ,则x^2+y^2的最小值为
已知实数x,y满足2x+y-2≥0 x-2y+4≥0 3x-y-3≤0 ,则x^2+y^2的最小值为
已知实数x,y满足2x+y-2≥0 x-2y+4≥0 3x-y-3≤0 ,则x^2+y^2的最小值为
2x+y-2≥0 x-2y+4≥0得
2x+y≥2
x-2y≥-4
两式平方再相加,得
5x^2+5y^2≥20
x^2+y^2≥4
则x^2+y^2的最小值为4
希望对你有帮助
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