Please answer this question with steps! Copying answers from others with receive a negative feedback, thank you! Note that LSD means: limiting spectral distribution

The Fisher LSD Fs,t is the distribution with the density function 1 -t Ps,t (x) = 2TX(s + tx) V(b - x)(x - a). asxsb, with a = a(s, t) (1 - h)2 b = b(s, t) (1 + h)2 (1 - t) 2. (1 - t)2' h = h(s, t) = (s+ t - st)1/2. Show that the first moment X Ps,t (X) dx = 1 - t