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解不等式的公式法
更新时间: 2021-04-06 02:00:11  

1、如果x>y,那么yy,y>z;那么x>z;(传递性);

3、如果x>y,而z为任意实数或整式,那么x+z>y+z,即不等式两边同时加或减去同一个整式,不等号方向不变;

4、如果x>y,z>0,那么xz>yz ,即不等式两边同时乘以(或除以)同一个大于0的整式,不等号方向不变;

5、如果x>y,zn,那么x+m>y+n;

7、如果x>y>0,m>n>0,那么xm>yn;

8、如果x>y>0,那么x的n次幂>y的n次幂(n为正数),x的n次幂

关键词: 不等式 公式

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