讨论Weierstrass逼近定理的应用.运用weierstrass逼近定理,我们对于连续偶函数和连续奇函数的性质进行了进一步的刻划.......

应用Weierstrass逼近定理对于连续奇函数和连续偶函数的性质做了进一步的刻划....

In this paper,the existence of nonconstant oscillating periodic solution of differential difference e-quation with n tim......