Is this a physical or mathematical waveform Please see the i

Is this a physical or mathematical waveform?

Please see the image below:

Is this a physical realizable waveform or mathematical waveform ? Why? (please use additional paper, or the reverse side, if necessary)

Solution

Yes it is physically realizable waveform this type of waveform can be generated using 555 timer circuits or Operational Amplifier with suitable resistance and capacitance values