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Consider the standard two-periods consumption model where consumers have the utility func- tion u(c)-S Furthermore, let a =0, y 0,and y-1. where 0 < ? and ? > 1 are parameters (a) Write down the consumer problem (b) Find the first order conditions. (c) Find the optimal consumption plan (c and c as function of variables ans parameters given to the consumer) Set ?-05, ? (d) (e) Set ?-2, ?-0.5 and r-0.02. Which consumption is larger, present or future? why? Is 0.5 and r 0.02. Which consumption is larger, present or future? Why? the consumption profile more or less volatile relative to part 4.d? why? (f) Now assume that the income stream is different: y -1 and y 0. Replicate part 4.d and explain the differences. (g) Assume that y -1 and yl-0 and that r increases from r0.02 to r 0.04 Compare the effect on c when ? 0.5, ? 2, and ?-1. Explain

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