- #1
Angello90
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Angello90 said:x(t) = t, [tex]0 \leq t \leq 1[/tex];
x(t) = 2-t, [tex]1 \leq t \leq 2[/tex];
x(t) = 0 ,otherwise.
I want to draw this signal, and I have something similar to this
Is that correct? Also this is not periodic right? I just want to be sure 100%
Thanks!
Angello90 said:Ok thanks a lot;)
Also if:
[tex]x[n] = Cos(\pi n), n\geq 0[/tex]
[tex]x[n] = 0, otherwise[/tex],
Than graph will be periodic from [tex]0 \rightarrow \infty[/tex], but from [tex]- \infty \rightarrow \infty[/tex] it is not periodic right? So overall is it periodic or not? My books says that it is periodic.
A signal is a representation of a physical quantity that varies over time or space. In the context of signals and systems, it is typically a function of time that carries information about a physical process or phenomenon.
There are various types of signals in signals and systems, including continuous-time signals, discrete-time signals, analog signals, digital signals, periodic signals, and non-periodic signals.
In signals and systems, signals are typically represented mathematically as functions of time or space. For example, a continuous-time signal may be represented as a function of time t, denoted as x(t), while a discrete-time signal may be represented as a sequence of numbers, denoted as x[n].
A signal is a representation of a physical quantity, while a system is a mathematical model or process that operates on signals to produce an output. In other words, a signal is the input to a system, and the system processes the signal to produce an output signal.
Signals and systems are used in a wide range of real-world applications, such as in telecommunications, audio and video processing, control systems, image processing, and biomedical signal processing. They are also essential in fields such as electrical engineering, computer science, and physics.