这本书提供了750个Mathematica的例子，适合初学者及进阶学习。Mathematica符号运算非常强大，界面简洁，语法严谨。-This book provides 750 examples for Mathematica learners. Basic concepts are given in the first three chapters, following 8 independent chapters for readers to choose flexibly.

这是一个基带信号产生的MATLAB程序,一共有8个码元产生,-This is a baseband signal produced by the MATLAB program, a total of eight yards yuan,