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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def amplitude_from_polarizations(h_plus, h_cross):
 """Return gravitational wave amplitude Return the gravitation-wave amplitude from the h_plus and h_cross polarizations of the waveform. Parameters h_plus : TimeSeries An PyCBC TmeSeries vector that contains the plus polarization of the gravitational waveform. h_cross : TimeSeries A PyCBC TmeSeries vector that contains the cross polarization of the gravitational waveform. Returns ------- GWAmplitude : TimeSeries A TimeSeries containing the gravitational wave amplitude. Examples -------- f_lower=30, delta_t=1.0/4096) """

    amp = (h_plus.squared_norm() + h_cross.squared_norm()) ** (0.5)
    return TimeSeries(amp, delta_t=h_plus.delta_t, epoch=h_plus.start_time)