java - Apache Commons Math: get derivate/integrate function -


i'm working polynomialfunction. derivate/integrate function f in next way:

// derivation ... new polynomialfunction(vector).value(x).getpartialderivative(derivationorder) // integration ... univariateintegrator integrator = new iterativelegendregaussintegrator(pointsnumber, relativeaccuracy, absoluteaccuracy, miniterations, maxiterations); integrator.integrate(128, f, from, to);

but how derivation/integration result function f without specifying real values?

i.e. derivate (8 + 3x + x^2) => 3 + 2x

for polynomial functions, can derivatives directly (as polynomials) using polynomialderivative method of polynomialfunction class. there more general setup differentiation described in analysis section of commons math user guide.


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