Answer Happy

(25 points) A) Compute the Fridmann's equations in terms of Hubble constant. B) Consider K = A = 0, in case of matter-dominated of Universe, fix at the beginnin H(t=0) = 0, and show the relations: 2 H (1+z) = (4) 8 and (1 + 2)2 = (#)? ) = z → red-shift parameter.