若实数xy满足x-y 1≥0,x y≥0,x≤0,则z=3“x 2y的最小值是多少
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若实数xy满足x-y1≥0,xy≥0,x≤0,则z=3“x2y的最小值是多少若实数xy满足x-y1≥0,xy≥0,x≤0,则z=3“x2y的最小值是多少若实数xy满足x-y1≥0,xy≥0,x≤0,则
若实数xy满足x-y 1≥0,x y≥0,x≤0,则z=3“x 2y的最小值是多少
若实数xy满足x-y 1≥0,x y≥0,x≤0,则z=3“x 2y的最小值是多少
若实数xy满足x-y 1≥0,x y≥0,x≤0,则z=3“x 2y的最小值是多少
满足条件
{x-y+1≥0
{x+y≥0
{x≤0
的点(x,y)的可行域为三角形及其内部,
顶点O(0,0),A(0,1),B(-1/2,1/2)
x+2y的最大值最优解为B(0,1)
最小值最优解为O(0,0)
z=3^(x+2y)的最小值zmin=3^0=1.
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若实数xy满足x-y 1≥0,x y≥0,x≤0,则z=3“x 2y的最小值是多少
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