在数学领域里，不等式知识占有广阔的天地，而一个个的重要不等式又把这片天地装点得更加丰富多彩。下面择要介绍一些著名的不等式。-In the mathematical field of knowledge, inequality has a vast world, and one of the important inequality and the sky deck more rich and colorful. The following describes some famous inequa