// y-cruncher Custom Formula File // // This can be loaded directly from the Custom Compute menu or // entered from the command line as "custom:filename". // // y-cruncher custom custom:"constant - algorithm" // // // Author: Alexander J. Yee // Date: February 26, 2019 // // Value: 1.22541670246517764512909830336289052685123924810807... // // Source: http://iamned.com/math/infiniteseries.pdf // // This file uses Ramanujan's formula for Pi to make it computationally // independent from "Gamma(1d4) - AGM-Pi.cfg". // { NameShort : "Gamma(¾)" NameLong : "Gamma(3/4)" AlgorithmShort : "Series-Pi (Brown)" AlgorithmLong : "Series-Pi (Brown 2009)" Formula : { Invsqrt : { Multiply : [ {SeriesHypergeometric : { CoefficientP : 1 CoefficientQ : 1 CoefficientD : 2 PolynomialP : [9 -24 16] PolynomialQ : [0 0 -128] PolynomialR : [9 -24 16] }} {Invsqrt : { Multiply : [ {Pi : {Algorithm : "ramanujan"}} {Invsqrt : 32} ] }} ] } } }