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  2. Thermal transmittance - Wikipedia

    en.wikipedia.org/wiki/Thermal_transmittance

    The average thermal insulance of the "bridged" layer depends upon the fraction of the area taken up by the mortar in comparison with the fraction of the area taken up by the light concrete blocks. To calculate thermal transmittance when there are "bridging" mortar joints it is necessary to calculate two quantities, known as R max and R min.

  3. Windows Calculator - Wikipedia

    en.wikipedia.org/wiki/Windows_Calculator

    A simple arithmetic calculator was first included with Windows 1.0. [5]In Windows 3.0, a scientific mode was added, which included exponents and roots, logarithms, factorial-based functions, trigonometry (supports radian, degree and gradians angles), base conversions (2, 8, 10, 16), logic operations, statistical functions such as single variable statistics and linear regression.

  4. FEE method - Wikipedia

    en.wikipedia.org/wiki/FEE_method

    The algorithms based on the method FEE include the algorithms for fast calculation of any elementary transcendental function for any value of the argument, the classical constants e, , the Euler constant, the Catalan and the Apéry constants, [4] such higher transcendental functions as the Euler gamma function and its derivatives, the ...

  5. Calculator input methods - Wikipedia

    en.wikipedia.org/wiki/Calculator_input_methods

    The simplest example given by Thimbleby of a possible problem when using an immediate-execution calculator is 4 × (−5). As a written formula the value of this is −20 because the minus sign is intended to indicate a negative number, rather than a subtraction, and this is the way that it would be interpreted by a formula calculator.

  6. Actuarial notation - Wikipedia

    en.wikipedia.org/wiki/Actuarial_notation

    This present value factor, or discount factor, is used to determine the amount of money that must be invested now in order to have a given amount of money in the future. For example, if you need 1 in one year, then the amount of money you should invest now is: 1 × v {\displaystyle \,1\times v} .

  7. Time value of money - Wikipedia

    en.wikipedia.org/wiki/Time_value_of_money

    Future value of an annuity (FVA): The future value of a stream of payments (annuity), assuming the payments are invested at a given rate of interest. There are several basic equations that represent the equalities listed above. The solutions may be found using (in most cases) the formulas, a financial calculator, or a spreadsheet. The formulas ...

  8. Initial value problem - Wikipedia

    en.wikipedia.org/wiki/Initial_value_problem

    The Banach fixed point theorem is then invoked to show that there exists a unique fixed point, which is the solution of the initial value problem. An older proof of the Picard–Lindelöf theorem constructs a sequence of functions which converge to the solution of the integral equation, and thus, the solution of the initial value problem.

  9. Coarea formula - Wikipedia

    en.wikipedia.org/wiki/Coarea_formula

    More general forms of the formula for Lipschitz functions were first established by Herbert Federer (Federer 1959), and for BV functions by Fleming & Rishel (1960). A precise statement of the formula is as follows. Suppose that Ω is an open set in and u is a real-valued Lipschitz function on Ω. Then, for an L 1 function g,