请高手帮帮忙，拜托了。
The utility funtion of each generation given by
U(c1,c2)=[c1^a]*[c2^(1-a)]
The production function given by
F(K,L)=A[K^a]*[L^(1-a)]
Let`s consider overlapping generations model, which population growth is constant, then solve following problems.
1.Derive the law of motion of k.
2.Derive the condition of dynamic inefficiency.
第一，二问是想求什么呢，有过程最好(简单点儿也可以)，拜托了，真的很着急。