8) Eh(x) = h'(x) / h(x) * x
h' (x) = ex^2 * ( 2x3 + 2x2 -1) / x2
Eh(x) = ex^2 * ( 2x3 + 2x2 -1) / x2 * x / (ex^2*(x+1)/x)
Eh(x) = ( 2x3 + 2x2 -1) / (x+1)
Eh(2) = (2* 8 + 2* 4 -1) / (2+1) = 23/3
9) Eg(x) = g'(x) / g(x) * x
g' (x) = 4 * e2(x-2)^2 * (x-2)
Eg(x) = 4 * e2(x-2)^2 * (x-2) * x / (e2(x-2)^2
Eg(x) = 4x2- 8x
Eg(3) = 4 * 9 - 8 * 3 = 12