线性系统课后答案第2章.doc

Linear System Theory and Design SA01010048 LING QING2.1 Consider the memoryless system with characteristics shown in Fig 2.19, in which u denotes the input and y the output. Which of them is a linear system? Is it possible to introduce a new output so that the system in Fig 2.19(b) is linear? Figure 2.19Translation: 考虑具有图2.19中表示的特性的无记忆系统。其中u表示输入，y表示输出。 下面哪一个是线性系统？可以找到一个新的输出，使得图2.19(b)中的系统是线性的吗？Answer: The input-output r