Business Calculus Quiz
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The present value, PVPV, of a continuous income stream that flows at a rate of R(t)R(t) dollars per year for TT years is given by the formula PV=∫0TR(t)e−rt dtPV = \int_{0}^{T} R(t) e^{-rt} \, dt, where rr is the continuous annual interest rate. For this formula to be mathematically and dimensionally sound, what must be the units of the quantity rtrt in the exponent?
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