作业帮设x、y满足条件x-y+5>=0,x+y>=0,x
来源：学生作业帮助网 编辑：作业帮 时间：2024/11/20 01:26:07
xOK0ƿ(mX, ̓8:[Ezq a*Zh ;ajW0r{7Qd ┫*7u5U w"99<$)ɣ%|vz̟X4U:u=46 2y3J^]f:q3O;qe7}(>S{
ET4UᚚQr293ʶI 8|>>.]ȸ?\h#`MU8p`z9݃=qٿ"A/Bd
设x、y满足条件x-y+5>=0,x+y>=0,x
设x、y满足条件x-y+5>=0,x+y>=0,x<=3.①求u=x^2+y^2的最大值与最小值②求v=y/x-5的最大值与最小值.
设x、y满足条件x-y+5>=0,x+y>=0,x
画出x-y+5≥0,x+y≥0,x≤3三者的图象可知：-2.5≤x≤3,-3≤y≤8
所以,
x=3,y=8时umax=x²+y²=3²+8²=73
x=0,y=0时umin=x²+y²=0
x=3,y=-3时,vmax=-3/(3-5)=1.5
x=3,y=8时,vmin=8/(3-5)=-4
0
设x、y满足条件x-y+5>=0,x+y>=0,x
设X,Y满足条件x-y+2>=0,x+y-4>=0,2x-y-5
设x.y满足条件y>=0.X-Y+1>=0.x+y-3
设变量x.y满足条件3x+2y
y满足条件【x-y
设z=2y-2x+4,式中x,y满足条件a,0
当x,y满足条件x>=0,y
设Z=X+Y,其中X,Y满足X+2Y>=0,X-Y
当x,y满足条件|x|+|y|
当x,y满足条件|x|+|y|
不等式.设x,y满足条件x-4y≤-3 3x+5y≤25 x≥1
设实数x,y满足 x>=0 x-2y>=0 x-y-2
设x,y满足约束条件x>=0 x>=y 2x-y
设x,y满足约束条件{x>=0,y>=x,4x+3y
设x,y满足约束条件x>=0 y>=x 4x+3y
设z=x-y,式中变量x和y满足条件x+y-3≥0,x-2y≥0,则z的最小值为
设变量x,y满足x+y
设X,Y满足约束条件X+Y