1. constraint Combine the within-period budget constraints into an intertemporal, nominal budget in period-1 values. Next, write the intertemporal budget constraint in real terms in period-1 values.

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Chapter1: Making Economics Decisions
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Consider an economy that lasts for two periods. A household receives nominal labour income Y₁ in the
first period and Y₂ in the second period. The price level in the first period is P₁ and in the second period
it's P₂. The nominal interest rate is i and the inflation rate is T. A household chooses real consumption
c₁ and c₂ (relative to price level in the first period) to maximise utility U(C₁, C2)=√₁+√√₂ with
0 < 3 < 1 being the time preference discount factor. Formally, the household solves:
max √₁ + 3√√₂
£1,C2
subject to: Y₁ = P₁c₁+s,
and Y₂ = P2c2 + (1 + i)s,
where s is either savings, when s> 0, or borrowing, when s < 0.
1.
Combine the within-period budget constraints into an intertemporal, nominal budget
constraint in period-1 values.
Next, write the intertemporal budget constraint in real terms in period-1 values.
Transcribed Image Text:Consider an economy that lasts for two periods. A household receives nominal labour income Y₁ in the first period and Y₂ in the second period. The price level in the first period is P₁ and in the second period it's P₂. The nominal interest rate is i and the inflation rate is T. A household chooses real consumption c₁ and c₂ (relative to price level in the first period) to maximise utility U(C₁, C2)=√₁+√√₂ with 0 < 3 < 1 being the time preference discount factor. Formally, the household solves: max √₁ + 3√√₂ £1,C2 subject to: Y₁ = P₁c₁+s, and Y₂ = P2c2 + (1 + i)s, where s is either savings, when s> 0, or borrowing, when s < 0. 1. Combine the within-period budget constraints into an intertemporal, nominal budget constraint in period-1 values. Next, write the intertemporal budget constraint in real terms in period-1 values.
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