Above gave the calculus solution in algebra and also values from discrete arithmetic with (10)(365) steps per year. For the arithmetic for the calculus solutio

Above gave the calculus solution in algebra and also values from discrete arithmetic with (10)(365) steps per year. For the arithmetic for the calculus solution, in Rexx, y.0 = ( 1 / 100 ) b = 1 k = ( 1 / 2000 ) Do t = 1 To 5 t1 = t * (10 * 365 ) e1 = RxCalcExp( b * k * t1, 16 ) y.t = ( y.0 * e1 ) / ( y.0 * ( e1 - 1 ) + b ) Say Format(t,9) Format(100*y.t,6,2) || '%' End Table below has the values from both the calculus and the discrete versions: ==== Growth ==== Customer Fraction Year Calculus Discrete 1 5.90% 5.89% 2 27.99% 27.97% 3 70.68% 70.66% 4 93.73% 93.73% 5 98.93% 98.93% Lesson: Sometimes in growth problems with a calculus solution, a discrete version can give close results.