Method derivative

src/PolyMath.cpp:178–180

}

double Polynomial2D::derivative(const Eigen::MatrixXd& coefficients, const double& x_in, const double& y_in, const int& axis = -1) {
    return this->evaluate(this->deriveCoeffs(coefficients, axis, 1), x_in, y_in);
}

double Polynomial2D::integral(const Eigen::MatrixXd& coefficients, const double& x_in, const double& y_in, const int& axis = -1) {
    return this->evaluate(this->integrateCoeffs(coefficients, axis, 1), x_in, y_in);