But if you plot the square of the amplitude you will get this, what is this amplitude here?
This is another thing that is important, what is the amplitude here; let us say I am taking
heave. So, it is z a is the response amplitude ok, what is the this is a this is wave
amplitude, instead of a, I mean I can call this to be say, wave amplitude. See, here I have
got square of wave amplitude and here I must have square of response amplitude, here I
have got a square, if I call a as wave amplitude, here I must have that; the I will come to
the relation.