Determine the fundamental period of the signal \(x(t)=\rm cos\ {\left( 2t+\frac{\pi}{4}\right)}\)

1
π s
2
2π s
3
\(\dfrac{\pi}{4}\ s\)
4
\(\dfrac{\pi}{2}\ s\)
5
\(\dfrac{\pi}{3}\;s\)
5
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