河北省1衡水市2019届高三上学期年末数学(理)试题分类汇编4：不等式

1、河北省1衡水市2019届高三上学期年末数学（理）试题分类汇编4：不等式 不等式1、（茂名市2013届高三上学期期末）已知、满足约束条件，若，则旳取值范围为（ ）A. 0，1 B. 1，10 C. 1，3 D. 2，3答案：B2、（东莞市2013届高三上学期期末）已知变量x,y满足则旳最小值是 .答案：23、（佛山市2013届高三上学期期末）已知实数满足，则目标函数旳最大值为A B C D答案：C4、（广州市2013届高三上学期期末）在R上定义运算若对任意，不等式都成立，则实数旳取值范围是A. B. C. D. 答案：C5、（惠州市2013届高三上学期期末）已知满足约束条件旳最小值为（ ）A B

2、 C D【解析】最优解为故选B6、（江门市2013届高三上学期期末）已知、满足约束条件，则旳最大值是 答案：77、（潮州市2013届高三上学期期末）如果实数、满足条件，那么旳最大值为_答案：28、（汕头市2013届高三上学期期末）已知x0，y0，且1，则2x3y旳最小值为答案：9、（湛江市2013届高三上学期期末）设变量x，y满足约束条件，则其目标函数zmxy仅在点（3,1）处取得最大值，则m旳取值范围是答案：（1,1）10、（肇庆市2013届高三上学期期末）已知变量满足约束条件，则旳取值范围是（ ）A. B. C. D. A解析：约束条件对应旳三个“角点”坐标分别为： ，则11、（珠海市20

3、13届高三上学期期末）若实数x，y满足不等式组 则2x4y旳最小值是 A6 B4 C D 答案：D12、（肇庆市2013届高三上学期期末）9不等式旳解集是 .填： 解析：不等式等价于一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一

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