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//chapter19
//example19.4
//page419
fc=2500 // kHz
fs_min=0.05 // kHz
fs_max=15 // kHz
upper_sideband_min=fc+fs_min
upper_sideband_max=fc+fs_max
lower_sideband_min=fc-fs_min
lower_sideband_max=fc-fs_max
BW=upper_sideband_max-lower_sideband_max
printf("lower sideband is from %.3f to %.3f kHz \n",lower_sideband_min,lower_sideband_max)
printf("upper sideband is from %.3f to %.3f kHz \n",upper_sideband_min,upper_sideband_max)
printf("Bandwidth for RF amplifier = %.3f kHz \n",BW)
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