Examples of jmathexpr.arithmetic.Polynomial

jmathexpr.arithmetic.Polynomial
This class represents a univariate polynomial. Its general form is a_nxⁿ + ... + a₁x + a₀. In this implementation only the coefficients are stored in a NavigableMap, where the keys correspond to the degree of the terms. @author Elemér Furka

    public void testPolynomials() {
        Variable x = Numbers.variable("x");
//        Logger.dump(new ExpressionParser().parse("2x^2 - 5x"));
//        System.exit(1);
//        Polynomial a = Polynomial.create(new ExpressionParser().parse("x^3 - 2x^2 - 4"), x);
        Polynomial a = Polynomial.create(new ExpressionParser().parse("x^3 - 2*x^2 - 4"), x);
        Polynomial b = Polynomial.create(new ExpressionParser().parse("x - 3"), x);
        OrderedPair quotient = a.euclideanDivision(b);
        
        System.out.printf("(%s) : (%s) = %s%n", a, b, quotient);
        
        Polynomial q = Polynomial.create(new ExpressionParser().parse("x^2 + x + 3"), x);
        Polynomial r = Polynomial.create(N.create(5), x);
        
        assertEquals(quotient, new OrderedPair(q, r));
    }

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        List<Expression> terms = new ArrayList();
        
        terms.add(lhs);
        terms.add(new Negation(rhs));
        
        return new Polynomial(terms, x);
    }

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     * 
     * @param x the indeterminate
     * @return a newly created polynomial instance
     */
    public Polynomial toPolynomial(Variable x) {
        return new Polynomial(terms, x);
    }

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            return true;
        }


        @Override
        public Expression apply() {
            Polynomial pl = Polynomial.create(((Equality) target).lhs(), x);
            Polynomial pr = Polynomial.create(((Equality) target).rhs(), x);
            Polynomial reduced;


            if (pl.degree().lt(pr.degree())) {
                reduced = pr.subtract(pl);
            } else {
                reduced = pl.subtract(pr);
            }
            
            Expression a = reduced.leadCoefficient();
            
            if (a instanceof ANumber && ((ANumber) a).isNegative()) {
                reduced = reduced.negate();
            }


            return new Equality(reduced, Naturals.zero());
        }

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Related Classes of jmathexpr.arithmetic.Polynomial

jmathexpr.arithmetic.equation.QuadraticEquation$Canonical

jmathexpr.arithmetic.natural.NaturalNumber

jmathexpr.arithmetic.op.Addition

jmathexpr.arithmetic.op.Division

jmathexpr.arithmetic.op.Exponentiation

jmathexpr.arithmetic.op.Multiplication

jmathexpr.arithmetic.op.Negation

jmathexpr.arithmetic.op.Subtraction

jmathexpr.arithmetic.op.Sum

jmathexpr.arithmetic.pattern.PolynomialTermPattern

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