What is the budget constraint for the intertemporal model?
(E1-c1)(1+r)+E2-c2=0
What happens when the interest rate increases?
The budget curve pivots around the endowment point, clockwise. This is because the cost of borrowing is higher and the reward to saving is lower.
How do we solve the MRS?
MU1/MU2 = 1+r… then can solve for c1 and c2.