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Actuarial notation is a shorthand method to allow actuaries to record mathematical formulas that deal with interest rates and life tables . Traditional notation uses a halo system, where symbols are placed as superscript or subscript before or after the main letter. Example notation using the halo system can be seen below.
The effective interest rate ( EIR ), effective annual interest rate, annual equivalent rate ( AER) or simply effective rate is the percentage of interest on a loan or financial product if compound interest accumulates in periods different than a year. [1] It is the compound interest payable annually in arrears, based on the nominal interest rate.
Amortizing loan. In banking and finance, an amortizing loan is a loan where the principal of the loan is paid down over the life of the loan (that is, amortized) according to an amortization schedule, typically through equal payments. Similarly, an amortizing bond is a bond that repays part of the principal ( face value) along with the coupon ...
The Factory Shops Essex Ltd. 5. Family run Essex -based discount shop [1] Goodwins. c. 2010s. Yorkshire Trading Company. 4. North East and Yorkshire based multi price discount retailer that originally started life as a pound shop.
The quality-adjusted life year ( QALY) is a generic measure of disease burden, including both the quality and the quantity of life lived. [1] [2] It is used in economic evaluation to assess the value of medical interventions. [1] One QALY equates to one year in perfect health. [2] QALY scores range from 1 (perfect health) to 0 (dead). [3]
This is the definition of the derivative. All differentiation rules can also be reframed as rules involving limits. For example, if g ( x) is differentiable at x , This is the chain rule. This is the product rule. If and are differentiable on an open interval containing c, except possibly c itself, and , L'Hôpital's rule can be used:
A two-input Cobb–Douglas production function with isoquants. In economics and econometrics, the Cobb–Douglas production function is a particular functional form of the production function, widely used to represent the technological relationship between the amounts of two or more inputs (particularly physical capital and labor) and the ...
The Bass model or Bass diffusion model was developed by Frank Bass. It consists of a simple differential equation that describes the process of how new products get adopted in a population. The model presents a rationale of how current adopters and potential adopters of a new product interact. The basic premise of the model is that adopters can ...