jscl.math.function.trigonometric.Acot Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of jscl Show documentation

java symbolic computing library and mathematical editor

The newest version!

package jscl.math.function.trigonometric;

import jscl.math.Generic;
import jscl.math.JSCLInteger;
import jscl.math.NumericWrapper;
import jscl.math.Variable;
import jscl.math.function.ArcTrigonometric;
import jscl.math.function.Constant;
import jscl.math.function.Inv;
import jscl.math.function.Log;
import jscl.math.function.Root;

public class Acot extends ArcTrigonometric {
    public Acot(Generic generic) {
        super("arccot",new Generic[] {generic});
    }

    public Generic derivative(int n) {
        return new Inv(
            JSCLInteger.valueOf(1).add(parameter[0].pow(2))
        ).evaluate().negate();
    }

    public Generic evaluate() {
        if(parameter[0].signum()<0) {
            return Constant.pi.subtract(new Acot(parameter[0].negate()).evaluate());
        }
        return expressionValue();
    }

    public Generic evalelem() {
        return Constant.i.multiply(
            new Log(
                new Root(
                    new Generic[] {
                        Constant.i.add(parameter[0]),
                        JSCLInteger.valueOf(0),
                        Constant.i.subtract(parameter[0])
                    },
                    0
                ).evalelem()
            ).evalelem()
        );
    }

    public Generic evalfunc() {
        return ((jscl.math.Function)parameter[0]).acot();
    }

    public Generic evalnum() {
        return ((NumericWrapper)parameter[0]).acot();
    }

    protected Variable newinstance() {
        return new Acot(null);
    }
}