Keep Your Direction  What would you do if you failed？Many people may choose to give up. However， the surest way to success is to keep your direction and stick to your goal.On yo...

柯西不等式柯西不等式 柯西不等式 柯西不等式是由大数学家柯西(Cauchy)在研究数学分析中的“流数”问题时得到的。但从历史的角度讲，该不等式应称作Cauchy-Buniakowsky-Schwarz不等式【柯西-布...

I love the song which brings me confidence when singing in it very time. When I was young, I not really think highly of my dream ,at that moment, I just think my dream is not a dre...