I'm not perfect, but I'm trying every day to be better than I was yesterday.
我认为在数学中,也许在生活中,你必须愿意让自己有点迷失。
The beauty of mathematics lies in its ability to describe the universe in the most elegant and concise way.
函数是一种对应规则,通过它当给定任何东西(作为参数)时,可以获得另一个东西(该参数的函数值)。