create varX = new Variable.Local<Rational>("x");

Discussion in 'Java' started by Mohamad Khaleghy, May 23, 2014.

  1. Hi
    I have sample code downloaded for using jscience.

    But when I use it, it gives this message:

    E/AndroidRuntime(1296): java.lang.NoClassDefFoundError:eek:rg.jscience.mathematics.function.Variable$Local

    Am i I missing something? Of course I imported the jscience jar lib to my project. But still can't figure this out.

    Variable.Local<Rational> varX = new Variable.Local<Rational>("x");
    Variable.Local<Rational> varY = new Variable.Local<Rational>("y");

    // f(x, y) = x² + x·y + 1;
    Polynomial<Rational> x = Polynomial.valueOf(Rational.ONE, varX);
    Polynomial<Rational> y = Polynomial.valueOf(Rational.ONE, varY);
    Polynomial<Rational> fx_y = x.pow(2).plus(x.times(y)).plus(Rational.ONE);
    System.out.println("f(x,y) = " + fx_y);

    // Evaluates f(1,0)
    System.out.println("f(1,0) = " + fx_y.evaluate(Rational.ONE, Rational..ZERO));

    // Calculates df(x,y)/dx
    System.out.println("df(x,y)/dx = " + fx_y.differentiate(varX));
     
    Mohamad Khaleghy, May 23, 2014
    #1
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  2. Mohamad Khaleghy

    Joerg Meier Guest

    On Fri, 23 May 2014 07:09:05 -0700 (PDT), Mohamad Khaleghy wrote:

    > Am i I missing something? Of course I imported the jscience jar lib to my project. But still can't figure this out.


    Importing it lets you compile. Are you also making sure that they get
    exported into the final apk ?

    Liebe Gruesse,
    Joerg

    --
    Ich lese meine Emails nicht, replies to Email bleiben also leider
    ungelesen.
     
    Joerg Meier, May 23, 2014
    #2
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