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- # Exponential model for population growth
- let initial_population = 50_000 people
- let growth_rate = 2% per year
- fn predict_population(t) =
- initial_population × e^(growth_rate·t) |> round_in(people)
- print("Population in 20 years: {predict_population(20 years)}")
- print("Population in 100 years: {predict_population(1 century)}")
- assert_eq(predict_population(20 years), 74_591 people)
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