已知实数x、y满足{2x+y-2>=0,x-2y+4>=0,3x-y-3
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已知实数x、y满足{2x+y-2>=0,x-2y+4>=0,3x-y-3
已知实数x、y满足{2x+y-2>=0,x-2y+4>=0,3x-y-3
已知实数x、y满足{2x+y-2>=0,x-2y+4>=0,3x-y-3
不知道是不是你的z=y+1/x+1是不是写错了,如果没错,z的值将随着y增大而增大,随着x减小二增大,因此z的最大值一定发生在直线x-2y+4=0上,因此求z最大值的问题转化成求解当0<=x<=2时z=(x+4)/2+1/x+1的最大值问题,最小值的求解同理.
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