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

[Mohamad Khaleghy]

Hi
I have sample code downloaded for using jscience.

But when I use it, it gives this message:

E/AndroidRuntime(1296): java.lang.NoClassDefFoundErrorrg.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));

 

[Joerg Meier]

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