Java - How would you find the differential of a function (eg. f(x) = 2x^2+2x-1) with given values for x using apache commons? -


i have looked in user guide, , still not understand. sorry may bad post.

public static void main(string[] args) {      // change different results     int xvalue = 2;      int howmanyunknowparamshasfunction = 1;     int howmanyderiviationwillyoutake = 1;     int whatistheindexofthisparameterx = 0;      derivativestructure x = new derivativestructure(howmanyunknowparamshasfunction, howmanyderiviationwillyoutake, whatistheindexofthisparameterx, xvalue);      // x --> x^2.     derivativestructure x2 = x.pow(2);      //y = 2x^2 + 2x - 1     derivativestructure y = new derivativestructure(2.0, x2, 2.0, x).subtract(1);      system.out.println("y    = " + y.getvalue());     system.out.println("y'   = " + y.getpartialderivative(1));  }

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