Odpowiedź :
[tex]Dane:\\t = \frac{1}{2}T = 4 \ s\\Szukane:\\T = ?\\f = ?\\\\\\T = 2t = 2\cdot4 \ s\\\\\boxed{T = 8 \ s} \ - \ okres \ drgan\\\\\\f = \frac{1}{T}\\\\f = \frac{1}{8 \ s}\\\\\boxed{f = 0,125 \ Hz} \ - \ czestotliwosc \ drgan[/tex]
[tex]Dane:\\t = \frac{1}{2}T = 4 \ s\\Szukane:\\T = ?\\f = ?\\\\\\T = 2t = 2\cdot4 \ s\\\\\boxed{T = 8 \ s} \ - \ okres \ drgan\\\\\\f = \frac{1}{T}\\\\f = \frac{1}{8 \ s}\\\\\boxed{f = 0,125 \ Hz} \ - \ czestotliwosc \ drgan[/tex]