# Finding bandwidth and halfpower(3dB)

#### uofmx12

Joined Mar 8, 2011
55
signal s(t)= (2a) / (t2+a2)
A) Determine the essential bandwidth B Hz of s(t) such that the energy contained in the spectral components of s(t) of frequency below B Hz is 99% of the signal energy.
B) Determine the half-power or 3dB bandwidth of the signal

With this, I am not quite sure where to start for part A.

#### TBayBoy

Joined May 25, 2011
148
Generally the people here want to see your work, and will give hints.