Periodicis

Why must the angle contain $\pi$ for $\cos$ be periodic?

Why must the angle contain $\pi$ for $\cos$ be periodic?
  1. Is cosine pi periodic?
  2. Is Cospix periodic?
  3. Is cos 2 2πt a periodic signal?

Is cosine pi periodic?

The cosine function is a trigonometric function that's called periodic.

Is Cospix periodic?

They consist of a pattern which repeats as we move along the x axis. We say that they are periodic.

Is cos 2 2πt a periodic signal?

It is. In general, a function defined on is periodic if we can find a value such that for every and . In this case we call the period of the function or signal. We often choose the value to be positive.

Should we use Maximal ratio combining and an equalizer together?
What are the advantages of maximal ratio combining over selection combining?What is maximal ratio combining technique?What is MRC in MIMO?What is Blu...
Error estimation, parameter estimation
What is estimation estimation of parameters?What is error of estimation?What are the two types of parameter estimation?What are two main sources of e...
Identification of properties of a given FIR filter
How do you know if a FIR filter is stable? How do you know if a FIR filter is stable?The necessary and sufficient condition for IIR filters to be st...