若变量x,y满足{2x+y＜=40 x+2y＜=50 x＞=0 y＞=0 }求z=3x+2y若变量x,y满足{2x+y＜=40 x+2y＜=50 x＞=0 y＞=0 }求z=3x+2y的最大值

变量x,y满足x-2y=0,x 若变量x,y满足约束条件{x>=-1;y>=x;3x+2y 变量x,y满足约束条件,x+y>=3,x-y>=-1,2x-y 若变量x,y满足约束条件｛y=0,x-y-2 若变量x,y满足约束条件｛y=0,x-y-2 设变量x,y满足x+y 设变量X,Y满足约束条件{X-Y+3>=0,X+Y>=0,-2 设变量x,y满足约束条件:x-y+3>=0 x+y>=0 -2 设z=2x+y式中变量x,y同时满足x-4y 若变量x y满足约束条件{x+y 设变量x.y满足条件3x+2y 若变量x,y满足{2x+y＜=40 x+2y＜=50 x＞=0 y＞=0 }求z=3x+2y若变量x,y满足{2x+y＜=40 x+2y＜=50 x＞=0 y＞=0 }求z=3x+2y的最大值 已知变量x,y满足条件{x 目标函数z=2x+y,变量x满足x-4y+3 已知变量x满足约束条件1：x-y+2=1；3:x+y-7 已知两个变量x,y满足3x-2y=4,则y=? 已知变量x,y满足约束条件x+2y-3=0,y-1 已知变量x,y满足约束条件x+2y-3=0,y-1