quadratic inequation and modulus

[Arik Yeganyan]

public static void solveInequalitiesEquationSymja(){// TODO find solution for 'x^2<x'. EvalUtilities util = new EvalUtilities(false, true); IExpr result = util.evaluate("x^2<x"); IExpr result2 = Solve(result,x); System.out.println("################## Inequalities equation ##################"); System.out.println("Result 1" + result); System.out.println("Result 2" + result2); }

############ Inequalities equation

Result 1 x^2<x ,,, Result 2 Solve(x^2<x,x)

I need to find x.

public static void solveModuleEquationSymja() {
    ExprEvaluator util = new ExprEvaluator();

    Parser parser = new Parser();
    ASTNode exprNode = parser.parse("Sqrt[x^2] == 7");
    AST2Expr ast2Expr = new AST2Expr();
    IExpr ast = ast2Expr.convert(exprNode);

    IAST function = Solve(ast, x);
    IExpr result = util.evaluate(function);

    System.out.println("################## Module equation ##################");
    System.out.println(result);
}

############ Module equation

{{x->-7},{x->7}}

Is there any solution not to use sqrt(x^2) ?

Thank you in advance

[Axel Kramer]

At the moment inequalities aren't supported in Solve().

Did you mean something like "x^2==49"?

    public static void solveModuleEquationSymja() {
        ExprEvaluator util = new ExprEvaluator();
        IExpr result = util.evaluate("Solve(x^2 == 49,x)");
        System.out.println("################## Module equation ##################");
        System.out.println(result);
    }

[Axel Kramer]

Please use the Github issue tracker to open a new issue if this issue shouldn't be closed Github issues