6. Log linearize each of the following equations. In each case define a point {y, x, z} such that y = f(x, z), and compute the linear function yt = E frat + Ef. Zt (a) yt = (are + (1 - a)20) 1/0 (b) yt = (are + (1 - a)20)7/0 (c) yt = (axt + bzt) (d) yt = 14 24 (e) yt = zex, +1