Class PowerSeries

  • public abstract class PowerSeriesextends IterativeMethod

    This class provides the means to evaluate infinite power series (1). To create a power series, authors subclass this class and provided a concrete term method.

    For example, this is the power series for the exponential function defined by (2):

     PowerSeries exponential = new PowerSeries() {     public double getTerm(int n) {         return 1.0 / factorial(n);     }      private double factorial(int n) {         double p = 1.0;         while(n > 1.0) {             p *= n--;         }         return p;     } } 


    1. Eric W. Weisstein. "Power Series." From MathWorld--A Wolfram Web Resource. http://mathworld.wolfram.com/PowerSeries.html
    2. Exponential Function: Series Representation. http://functions.wolfram.com/

    • Method Detail

      • evaluate

        public double evaluate(double x)                throws NumericException
        Evaluate this series at the given value.
        x - the point of evalutation.
        the value of this series evaluated at x.
        NumericException - if the series could not be evaluated.

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