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Free functions

linear_interpolateLinear interpolation between start and end. Returns start + (end - start) × t for 0 ≤ t ≤ 1.
exponential_growthCalculates exponential growth: initial × (1 + rate)^periods.
decayCalculates exponential decay: initial × (1 - rate)^periods. Requires rate < 1 for meaningful results.
compoundCalculates compound interest. Formula: principal × (1 + rate/n)^(n×t)…
simple_interestCalculates simple interest: principal × (1 + rate × time).
continuous_compoundCalculates continuously compounded interest: principal × e^(rate × time).
present_valueCalculates present value from future value. Formula: FV / (1 + rate)^periods
effective_annual_rateCalculates effective annual rate from nominal rate. Formula: (1 + r/n)^n - 1