//find the frequency of the wave
//given
clc
t1=100d-12
t2=500d-12
t3=1d-9
f1=t1^-1
f2=t2^-1
f3=t3^-1
disp(f3*1D-9,f2*1D-9,f1*1D-9,'the frequencies respectively')//in GHz