jeśli  T=5 min to f= ... T=1/8s to f=... f=5Hz to T=... f=2/8MHz to T=...

T= 5*60s = 300s f=1/T f=1/300s T=1/8s f=8 1/s f= 5Hz = 5 1/s T=1/5s f= 2/8 MHz = 2/8*1000000Hz = 2000000/8 1/s = 250000 1/s T=1/25000 s