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Signals and Systems by Smarajit Ghosh

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1.4 BASIC CONTINUOUS TIME SIGNALS

The basic continuous time signals will be discussed in this article.

1.4.1 Unit Step Function

Figure 1.6 shows a step function. The value of the function is zero for t < 0 and its value is unity for t ≥ 0.

 

Step function

 

Fig. 1.6 Step function

 

Mathematically, it is given below:

 

image

 

The following are shifted unit step functions:

Figure. 1.7 shows different types of shifted unit step function.

 

Shifted unit step function

 

Fig. 1.7 Shifted unit ...

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